2558156240664 has 48 divisors (see below), whose sum is σ = 7106054854200. Its totient is φ = 852710911344.

The previous prime is 2558156240663. The next prime is 2558156240707. The reversal of 2558156240664 is 4660426518552.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

2558156240664 is a `hidden beast` number, since 2 + 5 + 5 + 8 + 1 + 5 + 624 + 0 + 6 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2558156240664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2558156240663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23452219 + ... + 23561045.

Almost surely, 2^{2558156240664} is an apocalyptic number.

2558156240664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2558156240664 is an abundant number, since it is smaller than the sum of its proper divisors (4547898613536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2558156240664 is an frugal number, since it uses more digits than its factorization.

2558156240664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217669 (or 108832 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 54.

Multiplying 2558156240664 by its sum of digits (54), we get a square (138140436995856 = 11753316²).

2558156240664 divided by its sum of digits (54) gives a square (47373263716 = 217654²).

The spelling of 2558156240664 in words is "two trillion, five hundred fifty-eight billion, one hundred fifty-six million, two hundred forty thousand, six hundred sixty-four".