40545664541455 has 32 divisors (see below), whose sum is σ = 49628746137600. Its totient is φ = 31790680545792.

The previous prime is 40545664541383. The next prime is 40545664541521. The reversal of 40545664541455 is 55414546654504.

It is a cyclic number.

It is not a de Polignac number, because 40545664541455 - 2²¹ = 40545662444303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40545664541455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144832306 + ... + 145111984.

It is an arithmetic number, because the mean of its divisors is an integer number (1550898316800).

Almost surely, 2^{40545664541455} is an apocalyptic number.

40545664541455 is a deficient number, since it is larger than the sum of its proper divisors (9083081596145).

40545664541455 is a wasteful number, since it uses less digits than its factorization.

40545664541455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281223.

The product of its (nonzero) digits is 115200000, while the sum is 58.

The spelling of 40545664541455 in words is "forty trillion, five hundred forty-five billion, six hundred sixty-four million, five hundred forty-one thousand, four hundred fifty-five".