401253901380 has 36 divisors (see below), whose sum is σ = 1217136834732. Its totient is φ = 107001040320.

The previous prime is 401253901313. The next prime is 401253901403. The reversal of 401253901380 is 83109352104.

401253901380 is a `hidden beast` number, since 40 + 1 + 2 + 539 + 0 + 1 + 3 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 297042440256 + 104211461124 = 545016^2 + 322818^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×401253901380² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1114593991 + ... + 1114594350.

Almost surely, 2^401253901380 is an apocalyptic number.

It is an amenable number.

401253901380 is an abundant number, since it is smaller than the sum of its proper divisors (815882933352).

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

401253901380 is a wasteful number, since it uses less digits than its factorization.

401253901380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229188356 (or 2229188351 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 401253901380 in words is "four hundred one billion, two hundred fifty-three million, nine hundred one thousand, three hundred eighty".