54140155505 has 4 divisors (see below), whose sum is σ = 64968186612. Its totient is φ = 43312124400.

The previous prime is 54140155457. The next prime is 54140155507. The reversal of 54140155505 is 50555104145.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39568768561 + 14571386944 = 198919^2 + 120712^2 .

It is not a de Polignac number, because 54140155505 - 2⁶ = 54140155441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54140155507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5414015546 + ... + 5414015555.

It is an arithmetic number, because the mean of its divisors is an integer number (16242046653).

Almost surely, 2^54140155505 is an apocalyptic number.

It is an amenable number.

54140155505 is a deficient number, since it is larger than the sum of its proper divisors (10828031107).

54140155505 is a wasteful number, since it uses less digits than its factorization.

54140155505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10828031106.

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 54140155505 in words is "fifty-four billion, one hundred forty million, one hundred fifty-five thousand, five hundred five".