61501113570 has 64 divisors (see below), whose sum is σ = 160500098304. Its totient is φ = 14991747840.

The previous prime is 61501113529. The next prime is 61501113577. The reversal of 61501113570 is 7531110516.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (61501113577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 725341 + ... + 805680.

It is an arithmetic number, because the mean of its divisors is an integer number (2507814036).

Almost surely, 2^61501113570 is an apocalyptic number.

61501113570 is an abundant number, since it is smaller than the sum of its proper divisors (98998984734).

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

61501113570 is a wasteful number, since it uses less digits than its factorization.

61501113570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531147.

The product of its (nonzero) digits is 3150, while the sum is 30.

The spelling of 61501113570 in words is "sixty-one billion, five hundred one million, one hundred thirteen thousand, five hundred seventy".