40521455155 has 4 divisors (see below), whose sum is σ = 48625746192. Its totient is φ = 32417164120.

The previous prime is 40521455141. The next prime is 40521455207. The reversal of 40521455155 is 55155412504.

40521455155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40521455155 - 2⁵ = 40521455123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4052145511 + ... + 4052145520.

It is an arithmetic number, because the mean of its divisors is an integer number (12156436548).

Almost surely, 2^40521455155 is an apocalyptic number.

40521455155 is a deficient number, since it is larger than the sum of its proper divisors (8104291037).

40521455155 is an equidigital number, since it uses as much as digits as its factorization.

40521455155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104291036.

The product of its (nonzero) digits is 100000, while the sum is 37.

Adding to 40521455155 its reverse (55155412504), we get a palindrome (95676867659).

The spelling of 40521455155 in words is "forty billion, five hundred twenty-one million, four hundred fifty-five thousand, one hundred fifty-five".