61405782474 has 32 divisors (see below), whose sum is σ = 123325387200. Its totient is φ = 20383114752.

The previous prime is 61405782371. The next prime is 61405782499. The reversal of 61405782474 is 47428750416.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1584177 + ... + 1622475.

It is an arithmetic number, because the mean of its divisors is an integer number (3853918350).

Almost surely, 2^61405782474 is an apocalyptic number.

61405782474 is an abundant number, since it is smaller than the sum of its proper divisors (61919604726).

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

61405782474 is a wasteful number, since it uses less digits than its factorization.

61405782474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39414.

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 61405782474 in words is "sixty-one billion, four hundred five million, seven hundred eighty-two thousand, four hundred seventy-four".