61650701257620 has 48 divisors (see below), whose sum is σ = 172622346478848. Its totient is φ = 16440150529920.

The previous prime is 61650701257573. The next prime is 61650701257669. The reversal of 61650701257620 is 2675210705616.

It is a self number, because there is not a number n which added to its sum of digits gives 61650701257620.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 36289842 + ... + 37950678.

It is an arithmetic number, because the mean of its divisors is an integer number (3596298884976).

Almost surely, 2^{61650701257620} is an apocalyptic number.

61650701257620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61650701257620 is an abundant number, since it is smaller than the sum of its proper divisors (110971645221228).

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

61650701257620 is a wasteful number, since it uses less digits than its factorization.

61650701257620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279520 (or 2279518 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 61650701257620 in words is "sixty-one trillion, six hundred fifty billion, seven hundred one million, two hundred fifty-seven thousand, six hundred twenty".