121257162654 has 8 divisors (see below), whose sum is σ = 242514325320. Its totient is φ = 40419054216.

The previous prime is 121257162569. The next prime is 121257162661. The reversal of 121257162654 is 456261752121.

It is a sphenic number, since it is the product of 3 distinct primes.

121257162654 is an admirable number.

It is a super-3 number, since 3×121257162654³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10104763549 + ... + 10104763560.

It is an arithmetic number, because the mean of its divisors is an integer number (30314290665).

Almost surely, 2^121257162654 is an apocalyptic number.

121257162654 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121257162654 is a wasteful number, since it uses less digits than its factorization.

121257162654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20209527114.

The product of its digits is 201600, while the sum is 42.

The spelling of 121257162654 in words is "one hundred twenty-one billion, two hundred fifty-seven million, one hundred sixty-two thousand, six hundred fifty-four".