61158550750 has 32 divisors (see below), whose sum is σ = 124896885984. Its totient is φ = 22239472000.

The previous prime is 61158550727. The next prime is 61158550751. The reversal of 61158550750 is 5705585116.

It is a junction number, because it is equal to n+sod(n) for n = 61158550697 and 61158550706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61158550751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11116987 + ... + 11122486.

It is an arithmetic number, because the mean of its divisors is an integer number (3903027687).

Almost surely, 2^61158550750 is an apocalyptic number.

61158550750 is an abundant number, since it is smaller than the sum of its proper divisors (63738335234).

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

61158550750 is a wasteful number, since it uses less digits than its factorization.

61158550750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22239501 (or 22239491 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 43.

The spelling of 61158550750 in words is "sixty-one billion, one hundred fifty-eight million, five hundred fifty thousand, seven hundred fifty".