401554351971 has 12 divisors (see below), whose sum is σ = 590966782848. Its totient is φ = 262651902864.

The previous prime is 401554351949. The next prime is 401554352051. The reversal of 401554351971 is 179153455104.

401554351971 is a `hidden beast` number, since 4 + 0 + 1 + 554 + 3 + 5 + 1 + 97 + 1 = 666.

It is not a de Polignac number, because 401554351971 - 2⁶ = 401554351907 is a prime.

It is a super-2 number, since 2×401554351971² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401554351171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 420916035 + ... + 420916988.

It is an arithmetic number, because the mean of its divisors is an integer number (49247231904).

Almost surely, 2^401554351971 is an apocalyptic number.

401554351971 is a deficient number, since it is larger than the sum of its proper divisors (189412430877).

401554351971 is a wasteful number, since it uses less digits than its factorization.

401554351971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841833082 (or 841833079 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 401554351971 in words is "four hundred one billion, five hundred fifty-four million, three hundred fifty-one thousand, nine hundred seventy-one".