61764431530 has 16 divisors (see below), whose sum is σ = 111226482144. Its totient is φ = 24694549200.

The previous prime is 61764431479. The next prime is 61764431537. The reversal of 61764431530 is 3513446716.

It is not an unprimeable number, because it can be changed into a prime (61764431537) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1379796 + ... + 1423855.

It is an arithmetic number, because the mean of its divisors is an integer number (6951655134).

Almost surely, 2^61764431530 is an apocalyptic number.

61764431530 is a deficient number, since it is larger than the sum of its proper divisors (49462050614).

61764431530 is a wasteful number, since it uses less digits than its factorization.

61764431530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805861.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 61764431530 in words is "sixty-one billion, seven hundred sixty-four million, four hundred thirty-one thousand, five hundred thirty".