61289374572 has 48 divisors (see below), whose sum is σ = 160909772800. Its totient is φ = 20171183760.

The previous prime is 61289374567. The next prime is 61289374577. The reversal of 61289374572 is 27547398216.

It is a happy number.

61289374572 is a `hidden beast` number, since 61 + 2 + 8 + 9 + 3 + 7 + 4 + 572 = 666.

It is an interprime number because it is at equal distance from previous prime (61289374567) and next prime (61289374577).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (61289374577) 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, 3583204 + ... + 3600267.

Almost surely, 2^61289374572 is an apocalyptic number.

It is an amenable number.

61289374572 is an abundant number, since it is smaller than the sum of its proper divisors (99620398228).

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

61289374572 is a wasteful number, since it uses less digits than its factorization.

61289374572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7183563 (or 7183555 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 61289374572 in words is "sixty-one billion, two hundred eighty-nine million, three hundred seventy-four thousand, five hundred seventy-two".