54132121405 has 4 divisors (see below), whose sum is σ = 64958545692. Its totient is φ = 43305697120.

The previous prime is 54132121391. The next prime is 54132121411. The reversal of 54132121405 is 50412123145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50412123145 = 5 ⋅10082424629.

It can be written as a sum of positive squares in 2 ways, for example, as 5758077924 + 48374043481 = 75882^2 + 219941^2 .

It is not a de Polignac number, because 54132121405 - 2²⁷ = 53997903677 is a prime.

It is a Duffinian number.

It is a congruent 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, 5413212136 + ... + 5413212145.

It is an arithmetic number, because the mean of its divisors is an integer number (16239636423).

Almost surely, 2^54132121405 is an apocalyptic number.

It is an amenable number.

54132121405 is a deficient number, since it is larger than the sum of its proper divisors (10826424287).

54132121405 is a wasteful number, since it uses less digits than its factorization.

54132121405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10826424286.

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 54132121405 in words is "fifty-four billion, one hundred thirty-two million, one hundred twenty-one thousand, four hundred five".