86744973877 has 4 divisors (see below), whose sum is σ = 86918812000. Its totient is φ = 86571135756.

The previous prime is 86744973793. The next prime is 86744973881. The reversal of 86744973877 is 77837944768.

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 86744973877 - 2³⁵ = 52385235509 is a prime.

It is a super-2 number, since 2×86744973877² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86744973377) 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, 86918313 + ... + 86919310.

It is an arithmetic number, because the mean of its divisors is an integer number (21729703000).

Almost surely, 2^86744973877 is an apocalyptic number.

It is an amenable number.

86744973877 is a deficient number, since it is larger than the sum of its proper divisors (173838123).

86744973877 is a wasteful number, since it uses less digits than its factorization.

86744973877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173838122.

The product of its digits is 398297088, while the sum is 70.

The spelling of 86744973877 in words is "eighty-six billion, seven hundred forty-four million, nine hundred seventy-three thousand, eight hundred seventy-seven".