61569342834 has 16 divisors (see below), whose sum is σ = 123965121600. Its totient is φ = 20385374960.

The previous prime is 61569342817. The next prime is 61569342847. The reversal of 61569342834 is 43824396516.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34433862 + ... + 34435649.

It is an arithmetic number, because the mean of its divisors is an integer number (7747820100).

Almost surely, 2^61569342834 is an apocalyptic number.

61569342834 is an abundant number, since it is smaller than the sum of its proper divisors (62395778766).

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

61569342834 is a wasteful number, since it uses less digits than its factorization.

61569342834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68869665.

The product of its digits is 3732480, while the sum is 51.

The spelling of 61569342834 in words is "sixty-one billion, five hundred sixty-nine million, three hundred forty-two thousand, eight hundred thirty-four".