401557640001 has 8 divisors (see below), whose sum is σ = 611897356224. Its totient is φ = 229461508560.

The previous prime is 401557639963. The next prime is 401557640023. The reversal of 401557640001 is 100046755104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-401557640001 is a prime.

It is a super-2 number, since 2×401557640001² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401557640041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9560896170 + ... + 9560896211.

It is an arithmetic number, because the mean of its divisors is an integer number (76487169528).

Almost surely, 2^401557640001 is an apocalyptic number.

It is an amenable number.

401557640001 is a deficient number, since it is larger than the sum of its proper divisors (210339716223).

401557640001 is a wasteful number, since it uses less digits than its factorization.

401557640001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19121792391.

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 401557640001 in words is "four hundred one billion, five hundred fifty-seven million, six hundred forty thousand, one".