1254056561516 has 24 divisors (see below), whose sum is σ = 2394136362240. Its totient is φ = 570018952400.

The previous prime is 1254056561449. The next prime is 1254056561579. The reversal of 1254056561516 is 6151656504521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7075265 + ... + 7250343.

It is an arithmetic number, because the mean of its divisors is an integer number (99755681760).

Almost surely, 2^{1254056561516} is an apocalyptic number.

It is an amenable number.

1254056561516 is a deficient number, since it is larger than the sum of its proper divisors (1140079800724).

1254056561516 is a wasteful number, since it uses less digits than its factorization.

1254056561516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337885 (or 337883 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 47.

The spelling of 1254056561516 in words is "one trillion, two hundred fifty-four billion, fifty-six million, five hundred sixty-one thousand, five hundred sixteen".