61155996704 has 24 divisors (see below), whose sum is σ = 131346402768. Its totient is φ = 27798180160.

The previous prime is 61155996677. The next prime is 61155996709. The reversal of 61155996704 is 40769955116.

It is not an unprimeable number, because it can be changed into a prime (61155996709) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 86868962 + ... + 86869665.

It is an arithmetic number, because the mean of its divisors is an integer number (5472766782).

Almost surely, 2^61155996704 is an apocalyptic number.

It is an amenable number.

61155996704 is an abundant number, since it is smaller than the sum of its proper divisors (70190406064).

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

61155996704 is a wasteful number, since it uses less digits than its factorization.

61155996704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173738648 (or 173738640 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 53.

The spelling of 61155996704 in words is "sixty-one billion, one hundred fifty-five million, nine hundred ninety-six thousand, seven hundred four".