401061602157138 has 48 divisors (see below), whose sum is σ = 935811860256000. Its totient is φ = 123403377997152.

The previous prime is 401061602157131. The next prime is 401061602157169. The reversal of 401061602157138 is 831751206160104.

401061602157138 is a `hidden beast` number, since 4 + 0 + 1 + 0 + 6 + 1 + 602 + 1 + 5 + 7 + 1 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 401061602157093 and 401061602157102.

It is not an unprimeable number, because it can be changed into a prime (401061602157131) 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 23 ways as a sum of consecutive naturals, for example, 252805113 + ... + 254386611.

It is an arithmetic number, because the mean of its divisors is an integer number (19496080422000).

Almost surely, 2^{401061602157138} is an apocalyptic number.

401061602157138 is an abundant number, since it is smaller than the sum of its proper divisors (534750258098862).

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

401061602157138 is a wasteful number, since it uses less digits than its factorization.

401061602157138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665263 (or 2665260 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 401061602157138 in words is "four hundred one trillion, sixty-one billion, six hundred two million, one hundred fifty-seven thousand, one hundred thirty-eight".