400827018388 has 6 divisors (see below), whose sum is σ = 701447282186. Its totient is φ = 200413509192.

The previous prime is 400827018379. The next prime is 400827018583. The reversal of 400827018388 is 883810728004.

It can be written as a sum of positive squares in only one way, i.e., 337965497104 + 62861521284 = 581348^2 + 250722^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50103377295 + ... + 50103377302.

Almost surely, 2^400827018388 is an apocalyptic number.

It is an amenable number.

400827018388 is a deficient number, since it is larger than the sum of its proper divisors (300620263798).

400827018388 is a wasteful number, since it uses less digits than its factorization.

400827018388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100206754601 (or 100206754599 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 49.

The spelling of 400827018388 in words is "four hundred billion, eight hundred twenty-seven million, eighteen thousand, three hundred eighty-eight".