2581934655 has 32 divisors (see below), whose sum is σ = 4167037440. Its totient is φ = 1365091200.

The previous prime is 2581934647. The next prime is 2581934657. The reversal of 2581934655 is 5564391852.

It is not a de Polignac number, because 2581934655 - 2³ = 2581934647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581934657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1546161 + ... + 1547829.

It is an arithmetic number, because the mean of its divisors is an integer number (130219920).

Almost surely, 2^2581934655 is an apocalyptic number.

2581934655 is a deficient number, since it is larger than the sum of its proper divisors (1585102785).

2581934655 is a wasteful number, since it uses less digits than its factorization.

2581934655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511.

The product of its digits is 1296000, while the sum is 48.

The square root of 2581934655 is about 50812.7410695388. The cubic root of 2581934655 is about 1371.8767067778.

The spelling of 2581934655 in words is "two billion, five hundred eighty-one million, nine hundred thirty-four thousand, six hundred fifty-five".