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48878216931 = 330753070811
BaseRepresentation
bin101101100001010111…
…100110011011100011
311200011101222200112210
4231201113212123203
51300100310420211
634242045453203
73350150663115
oct554127463343
9150141880483
1048878216931
111980252a905
129581271203
1347bc53316b
1425197613b5
1514111599a6
hexb615e66e3

48878216931 has 8 divisors (see below), whose sum is σ = 65383240384. Its totient is φ = 32479335720.

The previous prime is 48878216923. The next prime is 48878216957. The reversal of 48878216931 is 13961287884.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 48878216931 - 23 = 48878216923 is a prime.

It is a super-2 number, since 2×488782169312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48878216921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26534485 + ... + 26536326.

It is an arithmetic number, because the mean of its divisors is an integer number (8172905048).

Almost surely, 248878216931 is an apocalyptic number.

48878216931 is a deficient number, since it is larger than the sum of its proper divisors (16505023453).

48878216931 is a wasteful number, since it uses less digits than its factorization.

48878216931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53071121.

The product of its digits is 4644864, while the sum is 57.

The spelling of 48878216931 in words is "forty-eight billion, eight hundred seventy-eight million, two hundred sixteen thousand, nine hundred thirty-one".

Divisors: 1 3 307 921 53070811 159212433 16292738977 48878216931