168572153457 has 80 divisors (see below), whose sum is σ = 272215848960. Its totient is φ = 103628947968.

The previous prime is 168572153443. The next prime is 168572153467. The reversal of 168572153457 is 754351275861.

168572153457 is a `hidden beast` number, since 1 + 6 + 8 + 57 + 2 + 1 + 534 + 57 = 666.

It is not a de Polignac number, because 168572153457 - 2¹⁹ = 168571629169 is a prime.

It is a super-2 number, since 2×168572153457² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168572153467) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10350873 + ... + 10367145.

It is an arithmetic number, because the mean of its divisors is an integer number (3402698112).

Almost surely, 2^168572153457 is an apocalyptic number.

It is an amenable number.

168572153457 is a deficient number, since it is larger than the sum of its proper divisors (103643695503).

168572153457 is a wasteful number, since it uses less digits than its factorization.

168572153457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16484 (or 16475 counting only the distinct ones).

The product of its digits is 7056000, while the sum is 54.

The spelling of 168572153457 in words is "one hundred sixty-eight billion, five hundred seventy-two million, one hundred fifty-three thousand, four hundred fifty-seven".