401533878536 has 16 divisors (see below), whose sum is σ = 860429739840. Its totient is φ = 172085947920.

The previous prime is 401533878503. The next prime is 401533878569. The reversal of 401533878536 is 635878335104.

It is an interprime number because it is at equal distance from previous prime (401533878503) and next prime (401533878569).

It is a super-2 number, since 2×401533878536² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3585123860 + ... + 3585123971.

It is an arithmetic number, because the mean of its divisors is an integer number (53776858740).

Almost surely, 2^401533878536 is an apocalyptic number.

It is an amenable number.

401533878536 is an abundant number, since it is smaller than the sum of its proper divisors (458895861304).

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

401533878536 is a wasteful number, since it uses less digits than its factorization.

401533878536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7170247844 (or 7170247840 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 401533878536 in words is "four hundred one billion, five hundred thirty-three million, eight hundred seventy-eight thousand, five hundred thirty-six".