61690510468475 has 96 divisors (see below), whose sum is σ = 99124291829760. Its totient is φ = 37096663824000.

The previous prime is 61690510468471. The next prime is 61690510468481. The reversal of 61690510468475 is 57486401509616.

It is a happy number.

It is not a de Polignac number, because 61690510468475 - 2² = 61690510468471 is a prime.

It is a super-2 number, since 2×61690510468475² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61690510468471) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10640171 + ... + 15381620.

It is an arithmetic number, because the mean of its divisors is an integer number (1032544706560).

Almost surely, 2^{61690510468475} is an apocalyptic number.

61690510468475 is a deficient number, since it is larger than the sum of its proper divisors (37433781361285).

61690510468475 is a wasteful number, since it uses less digits than its factorization.

61690510468475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26021881 (or 26021876 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 61690510468475 in words is "sixty-one trillion, six hundred ninety billion, five hundred ten million, four hundred sixty-eight thousand, four hundred seventy-five".