61344394860 has 96 divisors (see below), whose sum is σ = 196344368640. Its totient is φ = 14018554368.

The previous prime is 61344394849. The next prime is 61344394879. The reversal of 61344394860 is 6849344316.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2363031 + ... + 2388849.

It is an arithmetic number, because the mean of its divisors is an integer number (2045253840).

Almost surely, 2^61344394860 is an apocalyptic number.

61344394860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61344394860 is an abundant number, since it is smaller than the sum of its proper divisors (134999973780).

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

61344394860 is a wasteful number, since it uses less digits than its factorization.

61344394860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31495 (or 31493 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 48.

The spelling of 61344394860 in words is "sixty-one billion, three hundred forty-four million, three hundred ninety-four thousand, eight hundred sixty".