40420851653271 has 24 divisors (see below), whose sum is σ = 57114322088320. Its totient is φ = 25357622850144.

The previous prime is 40420851653269. The next prime is 40420851653359. The reversal of 40420851653271 is 17235615802404.

It is not a de Polignac number, because 40420851653271 - 2¹ = 40420851653269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40420851653271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40420851653251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14705395 + ... + 17236308.

Almost surely, 2^{40420851653271} is an apocalyptic number.

40420851653271 is a deficient number, since it is larger than the sum of its proper divisors (16693470435049).

40420851653271 is a wasteful number, since it uses less digits than its factorization.

40420851653271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31942023 (or 31941874 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 40420851653271 in words is "forty trillion, four hundred twenty billion, eight hundred fifty-one million, six hundred fifty-three thousand, two hundred seventy-one".