162973509497 has 16 divisors (see below), whose sum is σ = 168510547968. Its totient is φ = 157548948480.

The previous prime is 162973509443. The next prime is 162973509499. The reversal of 162973509497 is 794905379261.

It is a cyclic number.

It is not a de Polignac number, because 162973509497 - 2⁸ = 162973509241 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162973509499) 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, 893768 + ... + 1060550.

It is an arithmetic number, because the mean of its divisors is an integer number (10531909248).

Almost surely, 2^162973509497 is an apocalyptic number.

It is an amenable number.

162973509497 is a deficient number, since it is larger than the sum of its proper divisors (5537038471).

162973509497 is a wasteful number, since it uses less digits than its factorization.

162973509497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167120.

The product of its (nonzero) digits is 25719120, while the sum is 62.

The spelling of 162973509497 in words is "one hundred sixty-two billion, nine hundred seventy-three million, five hundred nine thousand, four hundred ninety-seven".