153978985798 has 32 divisors (see below), whose sum is σ = 265627496448. Its totient is φ = 66291556800.

The previous prime is 153978985781. The next prime is 153978985837. The reversal of 153978985798 is 897589879351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2369815 + ... + 2433922.

It is an arithmetic number, because the mean of its divisors is an integer number (8300859264).

Almost surely, 2^153978985798 is an apocalyptic number.

153978985798 is a deficient number, since it is larger than the sum of its proper divisors (111648510650).

153978985798 is a wasteful number, since it uses less digits than its factorization.

153978985798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803828.

The product of its digits is 1371686400, while the sum is 79.

The spelling of 153978985798 in words is "one hundred fifty-three billion, nine hundred seventy-eight million, nine hundred eighty-five thousand, seven hundred ninety-eight".