61115065480 has 64 divisors (see below), whose sum is σ = 163985783040. Its totient is φ = 20042702592.

The previous prime is 61115065463. The next prime is 61115065507. The reversal of 61115065480 is 8456051116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4738519 + ... + 4751398.

It is an arithmetic number, because the mean of its divisors is an integer number (2562277860).

Almost surely, 2^61115065480 is an apocalyptic number.

It is an amenable number.

61115065480 is an abundant number, since it is smaller than the sum of its proper divisors (102870717560).

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

61115065480 is a wasteful number, since it uses less digits than its factorization.

61115065480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489958 (or 9489954 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 61115065480 in words is "sixty-one billion, one hundred fifteen million, sixty-five thousand, four hundred eighty".