61239418658 has 96 divisors (see below), whose sum is σ = 107295121920. Its totient is φ = 26156908800.

The previous prime is 61239418649. The next prime is 61239418663. The reversal of 61239418658 is 85681493216.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

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 47 ways as a sum of consecutive naturals, for example, 36691448 + ... + 36693116.

It is an arithmetic number, because the mean of its divisors is an integer number (1117657520).

Almost surely, 2^61239418658 is an apocalyptic number.

61239418658 is a deficient number, since it is larger than the sum of its proper divisors (46055703262).

61239418658 is a wasteful number, since it uses less digits than its factorization.

61239418658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864 (or 1853 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 53.

The spelling of 61239418658 in words is "sixty-one billion, two hundred thirty-nine million, four hundred eighteen thousand, six hundred fifty-eight".