40365554641765 has 16 divisors (see below), whose sum is σ = 48909568675968. Its totient is φ = 31978516320576.

The previous prime is 40365554641751. The next prime is 40365554641823. The reversal of 40365554641765 is 56714645556304.

It is a cyclic number.

It is not a de Polignac number, because 40365554641765 - 2¹¹ = 40365554639717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43624614 + ... + 44540296.

It is an arithmetic number, because the mean of its divisors is an integer number (3056848042248).

Almost surely, 2^{40365554641765} is an apocalyptic number.

It is an amenable number.

40365554641765 is a deficient number, since it is larger than the sum of its proper divisors (8544014034203).

40365554641765 is a wasteful number, since it uses less digits than its factorization.

40365554641765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001388.

The product of its (nonzero) digits is 181440000, while the sum is 61.

The spelling of 40365554641765 in words is "forty trillion, three hundred sixty-five billion, five hundred fifty-four million, six hundred forty-one thousand, seven hundred sixty-five".