616845573901 has 4 divisors (see below), whose sum is σ = 621702625792. Its totient is φ = 611988522012.

The previous prime is 616845573881. The next prime is 616845573931. The reversal of 616845573901 is 109375548616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616845573901 - 2⁹ = 616845573389 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 (616845573931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2428525755 + ... + 2428526008.

It is an arithmetic number, because the mean of its divisors is an integer number (155425656448).

Almost surely, 2^616845573901 is an apocalyptic number.

It is an amenable number.

616845573901 is a deficient number, since it is larger than the sum of its proper divisors (4857051891).

616845573901 is a wasteful number, since it uses less digits than its factorization.

616845573901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857051890.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 616845573901 in words is "six hundred sixteen billion, eight hundred forty-five million, five hundred seventy-three thousand, nine hundred one".