79681625853 has 8 divisors (see below), whose sum is σ = 106400034048. Its totient is φ = 53042150784.

The previous prime is 79681625819. The next prime is 79681625857. The reversal of 79681625853 is 35852618697.

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

It is not a de Polignac number, because 79681625853 - 2⁶ = 79681625789 is a prime.

It is a super-4 number, since 4×79681625853⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79681625857) 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, 19730925 + ... + 19734962.

It is an arithmetic number, because the mean of its divisors is an integer number (13300004256).

Almost surely, 2^79681625853 is an apocalyptic number.

It is an amenable number.

79681625853 is a deficient number, since it is larger than the sum of its proper divisors (26718408195).

79681625853 is a wasteful number, since it uses less digits than its factorization.

79681625853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39466563.

The product of its digits is 21772800, while the sum is 60.

The spelling of 79681625853 in words is "seventy-nine billion, six hundred eighty-one million, six hundred twenty-five thousand, eight hundred fifty-three".