401031661360240 has 40 divisors (see below), whose sum is σ = 932439849726528. Its totient is φ = 160405569995520.

The previous prime is 401031661360237. The next prime is 401031661360367. The reversal of 401031661360240 is 42063166130104.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 401031661360240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109031976 + ... + 112650055.

Almost surely, 2^{401031661360240} is an apocalyptic number.

401031661360240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401031661360240 is an abundant number, since it is smaller than the sum of its proper divisors (531408188366288).

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

401031661360240 is a wasteful number, since it uses less digits than its factorization.

401031661360240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221704657 (or 221704651 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 401031661360240 in words is "four hundred one trillion, thirty-one billion, six hundred sixty-one million, three hundred sixty thousand, two hundred forty".