52121112534399 has 4 divisors (see below), whose sum is σ = 69494816712536. Its totient is φ = 34747408356264.

The previous prime is 52121112534391. The next prime is 52121112534467. The reversal of 52121112534399 is 99343521112125.

It is a happy number.

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

It is not a de Polignac number, because 52121112534399 - 2³ = 52121112534391 is a prime.

It is a super-2 number, since 2×52121112534399² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121112534391) 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, 8686852089064 + ... + 8686852089069.

It is an arithmetic number, because the mean of its divisors is an integer number (17373704178134).

Almost surely, 2^{52121112534399} is an apocalyptic number.

52121112534399 is a deficient number, since it is larger than the sum of its proper divisors (17373704178137).

52121112534399 is a wasteful number, since it uses less digits than its factorization.

52121112534399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17373704178136.

The product of its digits is 583200, while the sum is 48.

The spelling of 52121112534399 in words is "fifty-two trillion, one hundred twenty-one billion, one hundred twelve million, five hundred thirty-four thousand, three hundred ninety-nine".