254120540435215 has 16 divisors (see below), whose sum is σ = 305986991637600. Its totient is φ = 202601544089472.

The previous prime is 254120540435171. The next prime is 254120540435221. The reversal of 254120540435215 is 512534045021452.

It is a cyclic number.

It is not a de Polignac number, because 254120540435215 - 2²¹ = 254120538338063 is a prime.

It is a super-2 number, since 2×254120540435215² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 417204556 + ... + 417813214.

It is an arithmetic number, because the mean of its divisors is an integer number (19124186977350).

Almost surely, 2^{254120540435215} is an apocalyptic number.

254120540435215 is a deficient number, since it is larger than the sum of its proper divisors (51866451202385).

254120540435215 is a wasteful number, since it uses less digits than its factorization.

254120540435215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893946.

The product of its (nonzero) digits is 960000, while the sum is 43.

Adding to 254120540435215 its reverse (512534045021452), we get a palindrome (766654585456667).

The spelling of 254120540435215 in words is "two hundred fifty-four trillion, one hundred twenty billion, five hundred forty million, four hundred thirty-five thousand, two hundred fifteen".