401443263815 has 32 divisors (see below), whose sum is σ = 530308800576. Its totient is φ = 289302773760.

The previous prime is 401443263799. The next prime is 401443263839. The reversal of 401443263815 is 518362344104.

It is not a de Polignac number, because 401443263815 - 2⁴ = 401443263799 is a prime.

It is a super-2 number, since 2×401443263815² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45943127 + ... + 45951863.

It is an arithmetic number, because the mean of its divisors is an integer number (16572150018).

Almost surely, 2^401443263815 is an apocalyptic number.

401443263815 is a deficient number, since it is larger than the sum of its proper divisors (128865536761).

401443263815 is a wasteful number, since it uses less digits than its factorization.

401443263815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16259.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 401443263815 in words is "four hundred one billion, four hundred forty-three million, two hundred sixty-three thousand, eight hundred fifteen".