121501878808 has 16 divisors (see below), whose sum is σ = 227829642480. Its totient is φ = 60747307488.

The previous prime is 121501878791. The next prime is 121501878829. The reversal of 121501878808 is 808878105121.

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, 309091 + ... + 581842.

It is an arithmetic number, because the mean of its divisors is an integer number (14239352655).

Almost surely, 2^121501878808 is an apocalyptic number.

It is an amenable number.

121501878808 is a deficient number, since it is larger than the sum of its proper divisors (106327763672).

121501878808 is a wasteful number, since it uses less digits than its factorization.

121501878808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907986 (or 907982 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 49.

The spelling of 121501878808 in words is "one hundred twenty-one billion, five hundred one million, eight hundred seventy-eight thousand, eight hundred eight".