1401172371636 has 24 divisors (see below), whose sum is σ = 3269455512960. Its totient is φ = 467049841152.

The previous prime is 1401172371611. The next prime is 1401172371659. The reversal of 1401172371636 is 6361732711041.

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, 159021 + ... + 1681556.

It is an arithmetic number, because the mean of its divisors is an integer number (136227313040).

Almost surely, 2^{1401172371636} is an apocalyptic number.

It is an amenable number.

1401172371636 is an abundant number, since it is smaller than the sum of its proper divisors (1868283141324).

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

1401172371636 is a wasteful number, since it uses less digits than its factorization.

1401172371636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904023 (or 1904021 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 1401172371636 in words is "one trillion, four hundred one billion, one hundred seventy-two million, three hundred seventy-one thousand, six hundred thirty-six".