61646730474 has 32 divisors (see below), whose sum is σ = 143565436800. Its totient is φ = 17281023552.

The previous prime is 61646730449. The next prime is 61646730503. The reversal of 61646730474 is 47403764616.

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, 13844749 + ... + 13849200.

It is an arithmetic number, because the mean of its divisors is an integer number (4486419900).

Almost surely, 2^61646730474 is an apocalyptic number.

61646730474 is an abundant number, since it is smaller than the sum of its proper divisors (81918706326).

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

61646730474 is a wasteful number, since it uses less digits than its factorization.

61646730474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27694014.

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 61646730474 in words is "sixty-one billion, six hundred forty-six million, seven hundred thirty thousand, four hundred seventy-four".