83627425681 has 4 divisors (see below), whose sum is σ = 83677714432. Its totient is φ = 83577136932.

The previous prime is 83627425643. The next prime is 83627425697. The reversal of 83627425681 is 18652472638.

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 83627425681 - 2⁹ = 83627425169 is a prime.

It is a super-2 number, since 2×83627425681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83627425601) 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, 25141881 + ... + 25145206.

It is an arithmetic number, because the mean of its divisors is an integer number (20919428608).

Almost surely, 2^83627425681 is an apocalyptic number.

83627425681 is the 166961-st hex number.

It is an amenable number.

83627425681 is a deficient number, since it is larger than the sum of its proper divisors (50288751).

83627425681 is a wasteful number, since it uses less digits than its factorization.

83627425681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50288750.

The product of its digits is 3870720, while the sum is 52.

The spelling of 83627425681 in words is "eighty-three billion, six hundred twenty-seven million, four hundred twenty-five thousand, six hundred eighty-one".