402471779841 has 12 divisors (see below), whose sum is σ = 581392516432. Its totient is φ = 268294032216.

The previous prime is 402471779837. The next prime is 402471779861. The reversal of 402471779841 is 148977174204.

402471779841 is a `hidden beast` number, since 40 + 2 + 471 + 7 + 7 + 98 + 41 = 666.

It is not a de Polignac number, because 402471779841 - 2² = 402471779837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (402471779861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1582411 + ... + 1819056.

Almost surely, 2^402471779841 is an apocalyptic number.

It is an amenable number.

402471779841 is a deficient number, since it is larger than the sum of its proper divisors (178920736591).

402471779841 is a wasteful number, since it uses less digits than its factorization.

402471779841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414620 (or 3414617 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 402471779841 in words is "four hundred two billion, four hundred seventy-one million, seven hundred seventy-nine thousand, eight hundred forty-one".