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67912102090 = 257970172887
BaseRepresentation
bin111111001111111000…
…000111000011001010
320111021220121020101101
4333033320013003022
52103040444231330
651110504012014
74622632225510
oct771770070312
9214256536341
1067912102090
112688a67a508
12111b376100a
136533a060c1
1434035da4b0
151b771894ca
hexfcfe070ca

67912102090 has 16 divisors (see below), whose sum is σ = 139704895872. Its totient is φ = 23284149264.

The previous prime is 67912102087. The next prime is 67912102109. The reversal of 67912102090 is 9020121976.

It is a super-2 number, since 2×679121020902 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485086374 + ... + 485086513.

It is an arithmetic number, because the mean of its divisors is an integer number (8731555992).

Almost surely, 267912102090 is an apocalyptic number.

67912102090 is an abundant number, since it is smaller than the sum of its proper divisors (71792793782).

67912102090 is a wasteful number, since it uses less digits than its factorization.

67912102090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970172901.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 67912102090 in words is "sixty-seven billion, nine hundred twelve million, one hundred two thousand, ninety".

Divisors: 1 2 5 7 10 14 35 70 970172887 1940345774 4850864435 6791210209 9701728870 13582420418 33956051045 67912102090