61916875105475 has 24 divisors (see below), whose sum is σ = 82692065077440. Its totient is φ = 45718130776320.

The previous prime is 61916875105469. The next prime is 61916875105489. The reversal of 61916875105475 is 57450157861916.

It is a happy number.

It is not a de Polignac number, because 61916875105475 - 2¹² = 61916875101379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7705739 + ... + 13535588.

It is an arithmetic number, because the mean of its divisors is an integer number (3445502711560).

Almost surely, 2^{61916875105475} is an apocalyptic number.

61916875105475 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61916875105475 is a deficient number, since it is larger than the sum of its proper divisors (20775189971965).

61916875105475 is a wasteful number, since it uses less digits than its factorization.

61916875105475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250319 (or 21250314 counting only the distinct ones).

The product of its (nonzero) digits is 63504000, while the sum is 65.

The spelling of 61916875105475 in words is "sixty-one trillion, nine hundred sixteen billion, eight hundred seventy-five million, one hundred five thousand, four hundred seventy-five".