397168135494 has 16 divisors (see below), whose sum is σ = 855439061232. Its totient is φ = 122205580128.

The previous prime is 397168135457. The next prime is 397168135499. The reversal of 397168135494 is 494531861793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397168135499) 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, 2545949509 + ... + 2545949664.

It is an arithmetic number, because the mean of its divisors is an integer number (53464941327).

Almost surely, 2^397168135494 is an apocalyptic number.

397168135494 is an abundant number, since it is smaller than the sum of its proper divisors (458270925738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397168135494 is a wasteful number, since it uses less digits than its factorization.

397168135494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091899191.

The product of its digits is 19595520, while the sum is 60.

The spelling of 397168135494 in words is "three hundred ninety-seven billion, one hundred sixty-eight million, one hundred thirty-five thousand, four hundred ninety-four".