2578245463251 has 32 divisors (see below), whose sum is σ = 4022943045120. Its totient is φ = 1628733107232.

The previous prime is 2578245463243. The next prime is 2578245463271. The reversal of 2578245463251 is 1523645428752.

2578245463251 is a `hidden beast` number, since 2 + 5 + 7 + 82 + 454 + 63 + 2 + 51 = 666.

It is not a de Polignac number, because 2578245463251 - 2³ = 2578245463243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2578245463271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19334320 + ... + 19467213.

It is an arithmetic number, because the mean of its divisors is an integer number (125716970160).

Almost surely, 2^{2578245463251} is an apocalyptic number.

2578245463251 is a deficient number, since it is larger than the sum of its proper divisors (1444697581869).

2578245463251 is a wasteful number, since it uses less digits than its factorization.

2578245463251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38801672 (or 38801666 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 54.

The spelling of 2578245463251 in words is "two trillion, five hundred seventy-eight billion, two hundred forty-five million, four hundred sixty-three thousand, two hundred fifty-one".