621011616157 has 16 divisors (see below), whose sum is σ = 660613420800. Its totient is φ = 582132882240.

The previous prime is 621011616061. The next prime is 621011616161. The reversal of 621011616157 is 751616110126.

It is a cyclic number.

It is not a de Polignac number, because 621011616157 - 2²⁷ = 620877398429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621011616857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277407 + ... + 1148467.

It is an arithmetic number, because the mean of its divisors is an integer number (41288338800).

Almost surely, 2^621011616157 is an apocalyptic number.

It is an amenable number.

621011616157 is a deficient number, since it is larger than the sum of its proper divisors (39601804643).

621011616157 is a wasteful number, since it uses less digits than its factorization.

621011616157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871476.

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 621011616157 in words is "six hundred twenty-one billion, eleven million, six hundred sixteen thousand, one hundred fifty-seven".