162400420793 has 16 divisors (see below), whose sum is σ = 189697180176. Its totient is φ = 137648732160.

The previous prime is 162400420771. The next prime is 162400420873. The reversal of 162400420793 is 397024004261.

It can be written as a sum of positive squares in 8 ways, for example, as 38955706384 + 123444714409 = 197372^2 + 351347^2 .

It is a cyclic number.

It is not a de Polignac number, because 162400420793 - 2⁸ = 162400420537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162400410793) 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, 8952446 + ... + 8970567.

It is an arithmetic number, because the mean of its divisors is an integer number (11856073761).

Almost surely, 2^162400420793 is an apocalyptic number.

162400420793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

162400420793 is a deficient number, since it is larger than the sum of its proper divisors (27296759383).

162400420793 is a wasteful number, since it uses less digits than its factorization.

162400420793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17923084.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 162400420793 in words is "one hundred sixty-two billion, four hundred million, four hundred twenty thousand, seven hundred ninety-three".