870437152681 has 4 divisors (see below), whose sum is σ = 870836621200. Its totient is φ = 870037684164.

The previous prime is 870437152649. The next prime is 870437152691. The reversal of 870437152681 is 186251734078.

870437152681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 186251734078 = 2 ⋅93125867039.

It is a cyclic number.

It is not a de Polignac number, because 870437152681 - 2⁵ = 870437152649 is a prime.

It is a super-2 number, since 2×870437152681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870437152691) 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, 199730991 + ... + 199735348.

It is an arithmetic number, because the mean of its divisors is an integer number (217709155300).

Almost surely, 2^870437152681 is an apocalyptic number.

It is an amenable number.

870437152681 is a deficient number, since it is larger than the sum of its proper divisors (399468519).

870437152681 is a wasteful number, since it uses less digits than its factorization.

870437152681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399468518.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 870437152681 in words is "eight hundred seventy billion, four hundred thirty-seven million, one hundred fifty-two thousand, six hundred eighty-one".