61571383874 has 64 divisors (see below), whose sum is σ = 125573898240. Its totient is φ = 21863200320.

The previous prime is 61571383873. The next prime is 61571383879. The reversal of 61571383874 is 47838317516.

It is not an unprimeable number, because it can be changed into a prime (61571383873) 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, 36494 + ... + 352809.

It is an arithmetic number, because the mean of its divisors is an integer number (1962092160).

Almost surely, 2^61571383874 is an apocalyptic number.

61571383874 is an abundant number, since it is smaller than the sum of its proper divisors (64002514366).

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

61571383874 is a wasteful number, since it uses less digits than its factorization.

61571383874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389415.

The product of its digits is 3386880, while the sum is 53.

The spelling of 61571383874 in words is "sixty-one billion, five hundred seventy-one million, three hundred eighty-three thousand, eight hundred seventy-four".