406722778371 has 36 divisors (see below), whose sum is σ = 727035608208. Its totient is φ = 214535086272.

The previous prime is 406722778369. The next prime is 406722778373. The reversal of 406722778371 is 173877227604.

406722778371 is a `hidden beast` number, since 40 + 6 + 7 + 227 + 7 + 8 + 371 = 666.

It is an interprime number because it is at equal distance from previous prime (406722778369) and next prime (406722778373).

It is not a de Polignac number, because 406722778371 - 2¹ = 406722778369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406722778373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19089700 + ... + 19110993.

Almost surely, 2^406722778371 is an apocalyptic number.

406722778371 is a deficient number, since it is larger than the sum of its proper divisors (320312829837).

406722778371 is a wasteful number, since it uses less digits than its factorization.

406722778371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38200732 (or 38200716 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 54.

The spelling of 406722778371 in words is "four hundred six billion, seven hundred twenty-two million, seven hundred seventy-eight thousand, three hundred seventy-one".