61165250902 has 32 divisors (see below), whose sum is σ = 105313001472. Its totient is φ = 26099352384.

The previous prime is 61165250837. The next prime is 61165250911. The reversal of 61165250902 is 20905256116.

It is a super-2 number, since 2×61165250902² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3137778 + ... + 3157210.

It is an arithmetic number, because the mean of its divisors is an integer number (3291031296).

Almost surely, 2^61165250902 is an apocalyptic number.

61165250902 is a deficient number, since it is larger than the sum of its proper divisors (44147750570).

61165250902 is a wasteful number, since it uses less digits than its factorization.

61165250902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20412.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 61165250902 in words is "sixty-one billion, one hundred sixty-five million, two hundred fifty thousand, nine hundred two".