2978817488255 has 16 divisors (see below), whose sum is σ = 4097577529344. Its totient is φ = 2036446647840.

The previous prime is 2978817488249. The next prime is 2978817488263. The reversal of 2978817488255 is 5528847188792.

It is not a de Polignac number, because 2978817488255 - 2⁶ = 2978817488191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128551967 + ... + 128575136.

It is an arithmetic number, because the mean of its divisors is an integer number (256098595584).

Almost surely, 2^{2978817488255} is an apocalyptic number.

2978817488255 is a deficient number, since it is larger than the sum of its proper divisors (1118760041089).

2978817488255 is a wasteful number, since it uses less digits than its factorization.

2978817488255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257127446.

The product of its digits is 722534400, while the sum is 74.

The spelling of 2978817488255 in words is "two trillion, nine hundred seventy-eight billion, eight hundred seventeen million, four hundred eighty-eight thousand, two hundred fifty-five".