616623621501 has 8 divisors (see below), whose sum is σ = 822738571200. Its totient is φ = 410795543072.

The previous prime is 616623621491. The next prime is 616623621517. The reversal of 616623621501 is 105126326616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 616623621501 - 2⁷ = 616623621373 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 616623621501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616623611501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71712801 + ... + 71721398.

It is an arithmetic number, because the mean of its divisors is an integer number (102842321400).

Almost surely, 2^616623621501 is an apocalyptic number.

It is an amenable number.

616623621501 is a deficient number, since it is larger than the sum of its proper divisors (206114949699).

616623621501 is a wasteful number, since it uses less digits than its factorization.

616623621501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143435635.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 616623621501 in words is "six hundred sixteen billion, six hundred twenty-three million, six hundred twenty-one thousand, five hundred one".