40371855651 has 20 divisors (see below), whose sum is σ = 60444764952. Its totient is φ = 26853791328.

The previous prime is 40371855649. The next prime is 40371855653. The reversal of 40371855651 is 15655817304.

40371855651 is a `hidden beast` number, since 4 + 0 + 3 + 7 + 1 + 85 + 565 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (40371855649) and next prime (40371855653).

It is not a de Polignac number, because 40371855651 - 2¹ = 40371855649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40371855597 and 40371855606.

It is not an unprimeable number, because it can be changed into a prime (40371855653) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 526666 + ... + 598431.

Almost surely, 2^40371855651 is an apocalyptic number.

40371855651 is a deficient number, since it is larger than the sum of its proper divisors (20072909301).

40371855651 is a wasteful number, since it uses less digits than its factorization.

40371855651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125552 (or 1125543 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 40371855651 in words is "forty billion, three hundred seventy-one million, eight hundred fifty-five thousand, six hundred fifty-one".