61925754198 has 48 divisors (see below), whose sum is σ = 157169640384. Its totient is φ = 16084610640.

The previous prime is 61925754193. The next prime is 61925754229. The reversal of 61925754198 is 89145752916.

It is a happy number.

It is a super-2 number, since 2×61925754198² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61925754193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9570940 + ... + 9577407.

It is an arithmetic number, because the mean of its divisors is an integer number (3274367508).

Almost surely, 2^61925754198 is an apocalyptic number.

61925754198 is an abundant number, since it is smaller than the sum of its proper divisors (95243886186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61925754198 is a wasteful number, since it uses less digits than its factorization.

61925754198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19148377 (or 19148370 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 57.

The spelling of 61925754198 in words is "sixty-one billion, nine hundred twenty-five million, seven hundred fifty-four thousand, one hundred ninety-eight".