401561673359 has 24 divisors (see below), whose sum is σ = 509681754576. Its totient is φ = 312847920000.

The previous prime is 401561673349. The next prime is 401561673421. The reversal of 401561673359 is 953376165104.

It is not a de Polignac number, because 401561673359 - 2⁴ = 401561673343 is a prime.

It is a super-2 number, since 2×401561673359² (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 (401561673319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3007499 + ... + 3138179.

It is an arithmetic number, because the mean of its divisors is an integer number (21236739774).

Almost surely, 2^401561673359 is an apocalyptic number.

401561673359 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

401561673359 is a deficient number, since it is larger than the sum of its proper divisors (108120081217).

401561673359 is a wasteful number, since it uses less digits than its factorization.

401561673359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136407 (or 136400 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 401561673359 in words is "four hundred one billion, five hundred sixty-one million, six hundred seventy-three thousand, three hundred fifty-nine".