401073781164 has 96 divisors (see below), whose sum is σ = 1075974821376. Its totient is φ = 113902640640.

The previous prime is 401073781139. The next prime is 401073781181. The reversal of 401073781164 is 461187370104.

It is a super-2 number, since 2×401073781164² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 37594159 + ... + 37604825.

It is an arithmetic number, because the mean of its divisors is an integer number (11208071056).

Almost surely, 2^401073781164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401073781164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537987410688).

401073781164 is an abundant number, since it is smaller than the sum of its proper divisors (674901040212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401073781164 is a wasteful number, since it uses less digits than its factorization.

401073781164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13335 (or 13333 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 401073781164 in words is "four hundred one billion, seventy-three million, seven hundred eighty-one thousand, one hundred sixty-four".