401357520511 has 4 divisors (see below), whose sum is σ = 409897042272. Its totient is φ = 392817998752.

The previous prime is 401357520481. The next prime is 401357520581. The reversal of 401357520511 is 115025753104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401357520511 - 2⁹ = 401357519999 is a prime.

It is a super-2 number, since 2×401357520511² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401357520581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4269760810 + ... + 4269760903.

It is an arithmetic number, because the mean of its divisors is an integer number (102474260568).

Almost surely, 2^401357520511 is an apocalyptic number.

401357520511 is a deficient number, since it is larger than the sum of its proper divisors (8539521761).

401357520511 is an equidigital number, since it uses as much as digits as its factorization.

401357520511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539521760.

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 401357520511 in words is "four hundred one billion, three hundred fifty-seven million, five hundred twenty thousand, five hundred eleven".