401838372069 has 4 divisors (see below), whose sum is σ = 535784496096. Its totient is φ = 267892248044.

The previous prime is 401838372053. The next prime is 401838372073. The reversal of 401838372069 is 960273838104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401838372069 - 2⁴ = 401838372053 is a prime.

It is a super-2 number, since 2×401838372069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401838372769) 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, 66973062009 + ... + 66973062014.

It is an arithmetic number, because the mean of its divisors is an integer number (133946124024).

Almost surely, 2^401838372069 is an apocalyptic number.

It is an amenable number.

401838372069 is a deficient number, since it is larger than the sum of its proper divisors (133946124027).

401838372069 is a wasteful number, since it uses less digits than its factorization.

401838372069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133946124026.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 401838372069 in words is "four hundred one billion, eight hundred thirty-eight million, three hundred seventy-two thousand, sixty-nine".