2554718358981 has 16 divisors (see below), whose sum is σ = 3586234176000. Its totient is φ = 1613207284848.

The previous prime is 2554718358961. The next prime is 2554718358989. The reversal of 2554718358981 is 1898538174552.

It is not a de Polignac number, because 2554718358981 - 2⁹ = 2554718358469 is a prime.

It is a super-2 number, since 2×2554718358981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2554718358989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3842991 + ... + 4458476.

It is an arithmetic number, because the mean of its divisors is an integer number (224139636000).

Almost surely, 2^{2554718358981} is an apocalyptic number.

It is an amenable number.

2554718358981 is a deficient number, since it is larger than the sum of its proper divisors (1031515817019).

2554718358981 is a wasteful number, since it uses less digits than its factorization.

2554718358981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306888.

The product of its digits is 96768000, while the sum is 66.

The spelling of 2554718358981 in words is "two trillion, five hundred fifty-four billion, seven hundred eighteen million, three hundred fifty-eight thousand, nine hundred eighty-one".