2560439912121 has 96 divisors (see below), whose sum is σ = 4611064872960. Its totient is φ = 1333016860032.

The previous prime is 2560439912099. The next prime is 2560439912123. The reversal of 2560439912121 is 1212199340652.

It is a happy number.

2560439912121 is a `hidden beast` number, since 2 + 5 + 6 + 0 + 439 + 91 + 2 + 121 = 666.

It is not a de Polignac number, because 2560439912121 - 2⁶ = 2560439912057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2560439912123) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 288756130 + ... + 288764996.

It is an arithmetic number, because the mean of its divisors is an integer number (48031925760).

Almost surely, 2^{2560439912121} is an apocalyptic number.

2560439912121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2560439912121 is a deficient number, since it is larger than the sum of its proper divisors (2050624960839).

2560439912121 is a wasteful number, since it uses less digits than its factorization.

2560439912121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13435 (or 13432 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 2560439912121 in words is "two trillion, five hundred sixty billion, four hundred thirty-nine million, nine hundred twelve thousand, one hundred twenty-one".