61253705188 has 24 divisors (see below), whose sum is σ = 115470593280. Its totient is φ = 28263369120.

The previous prime is 61253705173. The next prime is 61253705189. The reversal of 61253705188 is 88150735216.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (61253705189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40653 + ... + 352363.

It is an arithmetic number, because the mean of its divisors is an integer number (4811274720).

Almost surely, 2^61253705188 is an apocalyptic number.

It is an amenable number.

61253705188 is a deficient number, since it is larger than the sum of its proper divisors (54216888092).

61253705188 is a wasteful number, since it uses less digits than its factorization.

61253705188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315507 (or 315505 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 61253705188 in words is "sixty-one billion, two hundred fifty-three million, seven hundred five thousand, one hundred eighty-eight".