61534317770 has 32 divisors (see below), whose sum is σ = 112329600768. Its totient is φ = 24267253248.

The previous prime is 61534317769. The next prime is 61534317787. The reversal of 61534317770 is 7771343516.

It is a Curzon number.

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, 134507 + ... + 375713.

It is an arithmetic number, because the mean of its divisors is an integer number (3510300024).

Almost surely, 2^61534317770 is an apocalyptic number.

61534317770 is a deficient number, since it is larger than the sum of its proper divisors (50795282998).

61534317770 is a wasteful number, since it uses less digits than its factorization.

61534317770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241574.

The product of its (nonzero) digits is 370440, while the sum is 44.

The spelling of 61534317770 in words is "sixty-one billion, five hundred thirty-four million, three hundred seventeen thousand, seven hundred seventy".