61913044842 has 32 divisors (see below), whose sum is σ = 135585213120. Its totient is φ = 18691777920.

The previous prime is 61913044829. The next prime is 61913044867. The reversal of 61913044842 is 24844031916.

It is a junction number, because it is equal to n+sod(n) for n = 61913044794 and 61913044803.

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, 1725883 + ... + 1761390.

It is an arithmetic number, because the mean of its divisors is an integer number (4237037910).

Almost surely, 2^61913044842 is an apocalyptic number.

61913044842 is an abundant number, since it is smaller than the sum of its proper divisors (73672168278).

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

61913044842 is a wasteful number, since it uses less digits than its factorization.

61913044842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487558.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 61913044842 in words is "sixty-one billion, nine hundred thirteen million, forty-four thousand, eight hundred forty-two".