2551089364981 has 8 divisors (see below), whose sum is σ = 2701422745560. Its totient is φ = 2400785906688.

The previous prime is 2551089364949. The next prime is 2551089365009. The reversal of 2551089364981 is 1894639801552.

2551089364981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 910745748900 + 1640343616081 = 954330^2 + 1280759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2551089364981 - 2⁵ = 2551089364949 is a prime.

It is a super-2 number, since 2×2551089364981² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551089364921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7304916 + ... + 7646173.

It is an arithmetic number, because the mean of its divisors is an integer number (337677843195).

Almost surely, 2^{2551089364981} is an apocalyptic number.

It is an amenable number.

2551089364981 is a deficient number, since it is larger than the sum of its proper divisors (150333380579).

2551089364981 is a wasteful number, since it uses less digits than its factorization.

2551089364981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14961143.

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 2551089364981 in words is "two trillion, five hundred fifty-one billion, eighty-nine million, three hundred sixty-four thousand, nine hundred eighty-one".