40515505555 has 16 divisors (see below), whose sum is σ = 55650032640. Its totient is φ = 27739105632.

The previous prime is 40515505549. The next prime is 40515505573. The reversal of 40515505555 is 55550551504.

It is a happy number.

It is not a de Polignac number, because 40515505555 - 2⁷ = 40515505427 is a prime.

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, 871935 + ... + 917224.

It is an arithmetic number, because the mean of its divisors is an integer number (3478127040).

Almost surely, 2^40515505555 is an apocalyptic number.

40515505555 is a deficient number, since it is larger than the sum of its proper divisors (15134527085).

40515505555 is a wasteful number, since it uses less digits than its factorization.

40515505555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789818.

The product of its (nonzero) digits is 312500, while the sum is 40.

The spelling of 40515505555 in words is "forty billion, five hundred fifteen million, five hundred five thousand, five hundred fifty-five".