864280379877 has 16 divisors (see below), whose sum is σ = 1157367258432. Its totient is φ = 573691808000.

The previous prime is 864280379857. The next prime is 864280379923. The reversal of 864280379877 is 778973082468.

It is a cyclic number.

It is not a de Polignac number, because 864280379877 - 2⁶ = 864280379813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864280379857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1983343 + ... + 2379539.

It is an arithmetic number, because the mean of its divisors is an integer number (72335453652).

Almost surely, 2^864280379877 is an apocalyptic number.

It is an amenable number.

864280379877 is a deficient number, since it is larger than the sum of its proper divisors (293086878555).

864280379877 is a wasteful number, since it uses less digits than its factorization.

864280379877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399348.

The product of its (nonzero) digits is 227598336, while the sum is 69.

The spelling of 864280379877 in words is "eight hundred sixty-four billion, two hundred eighty million, three hundred seventy-nine thousand, eight hundred seventy-seven".