870612140671649 has 4 divisors (see below), whose sum is σ = 870614046175536. Its totient is φ = 870610235167764.

The previous prime is 870612140671487. The next prime is 870612140671657. The reversal of 870612140671649 is 946176041216078.

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 a de Polignac number, because none of the positive numbers 2^k-870612140671649 is a prime.

It is a super-2 number, since 2×870612140671649² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870612140671591 and 870612140671600.

It is not an unprimeable number, because it can be changed into a prime (870612140601649) 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, 952066439 + ... + 952980444.

It is an arithmetic number, because the mean of its divisors is an integer number (217653511543884).

Almost surely, 2^{870612140671649} is an apocalyptic number.

It is an amenable number.

870612140671649 is a deficient number, since it is larger than the sum of its proper divisors (1905503887).

870612140671649 is a wasteful number, since it uses less digits than its factorization.

870612140671649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905503886.

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 870612140671649 in words is "eight hundred seventy trillion, six hundred twelve billion, one hundred forty million, six hundred seventy-one thousand, six hundred forty-nine".