40055515420545 has 48 divisors (see below), whose sum is σ = 71125005042000. Its totient is φ = 20841296087040.

The previous prime is 40055515420469. The next prime is 40055515420579. The reversal of 40055515420545 is 54502451555004.

It is a happy number.

40055515420545 is a `hidden beast` number, since 4 + 0 + 0 + 5 + 5 + 51 + 54 + 2 + 0 + 545 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 19514279745009 + 20541235675536 = 4417497^2 + 4532244^2 .

It is not a de Polignac number, because 40055515420545 - 2²⁹ = 40054978549633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 40055515420545.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68062411 + ... + 68648399.

It is an arithmetic number, because the mean of its divisors is an integer number (1481770938375).

Almost surely, 2^{40055515420545} is an apocalyptic number.

40055515420545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40055515420545 is a deficient number, since it is larger than the sum of its proper divisors (31069489621455).

40055515420545 is a wasteful number, since it uses less digits than its factorization.

40055515420545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623090 (or 623087 counting only the distinct ones).

The product of its (nonzero) digits is 2000000, while the sum is 45.

Adding to 40055515420545 its reverse (54502451555004), we get a palindrome (94557966975549).

The spelling of 40055515420545 in words is "forty trillion, fifty-five billion, five hundred fifteen million, four hundred twenty thousand, five hundred forty-five".