2561088633638 has 8 divisors (see below), whose sum is σ = 3841663430088. Its totient is φ = 1280534156944.

The previous prime is 2561088633617. The next prime is 2561088633643. The reversal of 2561088633638 is 8363368801652.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4760831 + ... + 5271402.

It is an arithmetic number, because the mean of its divisors is an integer number (480207928761).

Almost surely, 2^{2561088633638} is an apocalyptic number.

2561088633638 is a deficient number, since it is larger than the sum of its proper divisors (1280574796450).

2561088633638 is a wasteful number, since it uses less digits than its factorization.

2561088633638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10159878.

The product of its (nonzero) digits is 29859840, while the sum is 59.

The spelling of 2561088633638 in words is "two trillion, five hundred sixty-one billion, eighty-eight million, six hundred thirty-three thousand, six hundred thirty-eight".