61690561959075 has 96 divisors (see below), whose sum is σ = 117718336972800. Its totient is φ = 27923751052800.

The previous prime is 61690561959067. The next prime is 61690561959079. The reversal of 61690561959075 is 57095916509616.

It is not a de Polignac number, because 61690561959075 - 2³ = 61690561959067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61690561959079) 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, 23553430 + ... + 26041220.

It is an arithmetic number, because the mean of its divisors is an integer number (1226232676800).

Almost surely, 2^{61690561959075} is an apocalyptic number.

61690561959075 is a deficient number, since it is larger than the sum of its proper divisors (56027775013725).

61690561959075 is a wasteful number, since it uses less digits than its factorization.

61690561959075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488277 (or 2488272 counting only the distinct ones).

The product of its (nonzero) digits is 137781000, while the sum is 69.

The spelling of 61690561959075 in words is "sixty-one trillion, six hundred ninety billion, five hundred sixty-one million, nine hundred fifty-nine thousand, seventy-five".