167121949527954 has 48 divisors (see below), whose sum is σ = 373834095198720. Its totient is φ = 53902233483840.

The previous prime is 167121949527887. The next prime is 167121949527979. The reversal of 167121949527954 is 459725949121761.

167121949527954 is a `hidden beast` number, since 1 + 6 + 7 + 1 + 2 + 1 + 9 + 4 + 9 + 527 + 95 + 4 = 666.

It is a super-2 number, since 2×167121949527954² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18694267 + ... + 26148030.

It is an arithmetic number, because the mean of its divisors is an integer number (7788210316640).

Almost surely, 2^{167121949527954} is an apocalyptic number.

167121949527954 is an abundant number, since it is smaller than the sum of its proper divisors (206712145670766).

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

167121949527954 is a wasteful number, since it uses less digits than its factorization.

167121949527954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44849015 (or 44849012 counting only the distinct ones).

The product of its digits is 342921600, while the sum is 72.

The spelling of 167121949527954 in words is "one hundred sixty-seven trillion, one hundred twenty-one billion, nine hundred forty-nine million, five hundred twenty-seven thousand, nine hundred fifty-four".