406271633940 has 72 divisors (see below), whose sum is σ = 1232532127008. Its totient is φ = 108323732160.

The previous prime is 406271633939. The next prime is 406271633983. The reversal of 406271633940 is 49336172604.

406271633940 is a `hidden beast` number, since 4 + 0 + 6 + 2 + 7 + 1 + 633 + 9 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1141479 + ... + 1454481.

It is an arithmetic number, because the mean of its divisors is an integer number (17118501764).

Almost surely, 2^406271633940 is an apocalyptic number.

It is an amenable number.

406271633940 is an abundant number, since it is smaller than the sum of its proper divisors (826260493068).

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

406271633940 is a wasteful number, since it uses less digits than its factorization.

406271633940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320229 (or 320224 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 406271633940 in words is "four hundred six billion, two hundred seventy-one million, six hundred thirty-three thousand, nine hundred forty".