121535308708893 has 32 divisors (see below), whose sum is σ = 180451746744320. Its totient is φ = 80843802969600.

The previous prime is 121535308708837. The next prime is 121535308708897. The reversal of 121535308708893 is 398807803535121.

121535308708893 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 3 + 530 + 8 + 7 + 0 + 8 + 8 + 93 = 666.

121535308708893 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 121535308708893 - 2⁸ = 121535308708637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121535308708893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121535308708897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468147621 + ... + 468407157.

It is an arithmetic number, because the mean of its divisors is an integer number (5639117085760).

Almost surely, 2^{121535308708893} is an apocalyptic number.

It is an amenable number.

121535308708893 is a deficient number, since it is larger than the sum of its proper divisors (58916438035427).

121535308708893 is a wasteful number, since it uses less digits than its factorization.

121535308708893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297954 (or 297948 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 63.

The spelling of 121535308708893 in words is "one hundred twenty-one trillion, five hundred thirty-five billion, three hundred eight million, seven hundred eight thousand, eight hundred ninety-three".