401405351200 has 72 divisors (see below), whose sum is σ = 1119920945472. Its totient is φ = 137624689920.

The previous prime is 401405351197. The next prime is 401405351213. The reversal of 401405351200 is 2153504104.

It is a happy number.

It is a super-2 number, since 2×401405351200² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35834164 + ... + 35845363.

It is an arithmetic number, because the mean of its divisors is an integer number (15554457576).

Almost surely, 2^401405351200 is an apocalyptic number.

401405351200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401405351200 is an abundant number, since it is smaller than the sum of its proper divisors (718515594272).

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

401405351200 is a wasteful number, since it uses less digits than its factorization.

401405351200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71679554 (or 71679541 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 401405351200 its reverse (2153504104), we get a palindrome (403558855304).

The spelling of 401405351200 in words is "four hundred one billion, four hundred five million, three hundred fifty-one thousand, two hundred".