2555437863261 has 16 divisors (see below), whose sum is σ = 3529301794560. Its totient is φ = 1642751584320.

The previous prime is 2555437863257. The next prime is 2555437863313. The reversal of 2555437863261 is 1623687345552.

It is not a de Polignac number, because 2555437863261 - 2² = 2555437863257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555437864261) 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, 18932005 + ... + 19066506.

It is an arithmetic number, because the mean of its divisors is an integer number (220581362160).

Almost surely, 2^{2555437863261} is an apocalyptic number.

It is an amenable number.

2555437863261 is a deficient number, since it is larger than the sum of its proper divisors (973863931299).

2555437863261 is a wasteful number, since it uses less digits than its factorization.

2555437863261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37999316.

The product of its digits is 36288000, while the sum is 57.

The spelling of 2555437863261 in words is "two trillion, five hundred fifty-five billion, four hundred thirty-seven million, eight hundred sixty-three thousand, two hundred sixty-one".