168407856913 has 8 divisors (see below), whose sum is σ = 169749208640. Its totient is φ = 167069906640.

The previous prime is 168407856899. The next prime is 168407856931. The reversal of 168407856913 is 319658704861.

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

It is a cyclic number.

It is not a de Polignac number, because 168407856913 - 2²¹ = 168405759761 is a prime.

It is a super-2 number, since 2×168407856913² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168407856943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750903 + ... + 949036.

It is an arithmetic number, because the mean of its divisors is an integer number (21218651080).

Almost surely, 2^168407856913 is an apocalyptic number.

It is an amenable number.

168407856913 is a deficient number, since it is larger than the sum of its proper divisors (1341351727).

168407856913 is a wasteful number, since it uses less digits than its factorization.

168407856913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700727.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 168407856913 in words is "one hundred sixty-eight billion, four hundred seven million, eight hundred fifty-six thousand, nine hundred thirteen".