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47873121980 = 2259744815507
BaseRepresentation
bin101100100101011101…
…011101111010111100
311120120100201120110212
4230211131131322330
51241021004400410
633554223051552
73313224552125
oct544535357274
9146510646425
1047873121980
1119337147122
129340740bb8
13468c230c18
14246208904c
1513a2cbdb05
hexb2575debc

47873121980 has 48 divisors (see below), whose sum is σ = 101611099296. Its totient is φ = 18944163840.

The previous prime is 47873121979. The next prime is 47873122013. The reversal of 47873121980 is 8912137874.

It is a happy number.

It is a super-2 number, since 2×478731219802 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8690387 + ... + 8695893.

It is an arithmetic number, because the mean of its divisors is an integer number (2116897902).

Almost surely, 247873121980 is an apocalyptic number.

It is an amenable number.

47873121980 is an abundant number, since it is smaller than the sum of its proper divisors (53737977316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47873121980 is a wasteful number, since it uses less digits than its factorization.

47873121980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10094 (or 10092 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 47873121980 in words is "forty-seven billion, eight hundred seventy-three million, one hundred twenty-one thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 97 194 388 485 970 1940 4481 5507 8962 11014 17924 22028 22405 27535 44810 55070 89620 110140 434657 534179 869314 1068358 1738628 2136716 2173285 2670895 4346570 5341790 8693140 10683580 24676867 49353734 98707468 123384335 246768670 493537340 2393656099 4787312198 9574624396 11968280495 23936560990 47873121980