121751527157 has 16 divisors (see below), whose sum is σ = 136848797568. Its totient is φ = 107475297600.

The previous prime is 121751527099. The next prime is 121751527171. The reversal of 121751527157 is 751725157121.

It is a cyclic number.

It is not a de Polignac number, because 121751527157 - 2¹⁴ = 121751510773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121751527657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344407 + ... + 1432107.

It is an arithmetic number, because the mean of its divisors is an integer number (8553049848).

Almost surely, 2^121751527157 is an apocalyptic number.

It is an amenable number.

121751527157 is a deficient number, since it is larger than the sum of its proper divisors (15097270411).

121751527157 is a wasteful number, since it uses less digits than its factorization.

121751527157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92380.

The product of its digits is 171500, while the sum is 44.

The spelling of 121751527157 in words is "one hundred twenty-one billion, seven hundred fifty-one million, five hundred twenty-seven thousand, one hundred fifty-seven".