401950815403842 has 24 divisors (see below), whose sum is σ = 871296438287340. Its totient is φ = 133921604378880.

The previous prime is 401950815403829. The next prime is 401950815403843. The reversal of 401950815403842 is 248304518059104.

401950815403842 is a `hidden beast` number, since 4 + 0 + 1 + 9 + 50 + 8 + 1 + 540 + 3 + 8 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 395512218725121 + 6438596678721 = 19887489^2 + 2537439^2 .

It is not an unprimeable number, because it can be changed into a prime (401950815403843) 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, 5166689667 + ... + 5166767462.

Almost surely, 2^{401950815403842} is an apocalyptic number.

401950815403842 is an abundant number, since it is smaller than the sum of its proper divisors (469345622883498).

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

401950815403842 is a wasteful number, since it uses less digits than its factorization.

401950815403842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10333459298 (or 10333459295 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 401950815403842 in words is "four hundred one trillion, nine hundred fifty billion, eight hundred fifteen million, four hundred three thousand, eight hundred forty-two".