861274657216634 has 8 divisors (see below), whose sum is σ = 1291912880008608. Its totient is φ = 430637030547100.

The previous prime is 861274657216601. The next prime is 861274657216667. The reversal of 861274657216634 is 436612756472168.

It is an interprime number because it is at equal distance from previous prime (861274657216601) and next prime (861274657216667).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145400942 + ... + 151208409.

It is an arithmetic number, because the mean of its divisors is an integer number (161489110001076).

Almost surely, 2^{861274657216634} is an apocalyptic number.

861274657216634 is a deficient number, since it is larger than the sum of its proper divisors (430638222791974).

861274657216634 is a wasteful number, since it uses less digits than its factorization.

861274657216634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298061220.

The product of its digits is 487710720, while the sum is 68.

The spelling of 861274657216634 in words is "eight hundred sixty-one trillion, two hundred seventy-four billion, six hundred fifty-seven million, two hundred sixteen thousand, six hundred thirty-four".