616124636761 has 4 divisors (see below), whose sum is σ = 619904542672. Its totient is φ = 612344730852.

The previous prime is 616124636753. The next prime is 616124636779. The reversal of 616124636761 is 167636421616.

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 616124636761 - 2³ = 616124636753 is a prime.

It is a super-2 number, since 2×616124636761² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616124636731) 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, 1889952711 + ... + 1889953036.

It is an arithmetic number, because the mean of its divisors is an integer number (154976135668).

Almost surely, 2^616124636761 is an apocalyptic number.

It is an amenable number.

616124636761 is a deficient number, since it is larger than the sum of its proper divisors (3779905911).

616124636761 is a wasteful number, since it uses less digits than its factorization.

616124636761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779905910.

The product of its digits is 1306368, while the sum is 49.

The spelling of 616124636761 in words is "six hundred sixteen billion, one hundred twenty-four million, six hundred thirty-six thousand, seven hundred sixty-one".