61191465530 has 16 divisors (see below), whose sum is σ = 118617302664. Its totient is φ = 22593771840.

The previous prime is 61191465499. The next prime is 61191465583. The reversal of 61191465530 is 3556419116.

It can be written as a sum of positive squares in 4 ways, for example, as 32063557969 + 29127907561 = 179063^2 + 170669^2 .

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, 235351661 + ... + 235351920.

Almost surely, 2^61191465530 is an apocalyptic number.

61191465530 is a deficient number, since it is larger than the sum of its proper divisors (57425837134).

61191465530 is a wasteful number, since it uses less digits than its factorization.

61191465530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470703601.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 61191465530 in words is "sixty-one billion, one hundred ninety-one million, four hundred sixty-five thousand, five hundred thirty".