2561153391735 has 8 divisors (see below), whose sum is σ = 4097845426800. Its totient is φ = 1365948475584.

The previous prime is 2561153391707. The next prime is 2561153391787. The reversal of 2561153391735 is 5371933511652.

2561153391735 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2561153391735 - 2⁸ = 2561153391479 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85371779710 + ... + 85371779739.

It is an arithmetic number, because the mean of its divisors is an integer number (512230678350).

Almost surely, 2^{2561153391735} is an apocalyptic number.

2561153391735 is a deficient number, since it is larger than the sum of its proper divisors (1536692035065).

2561153391735 is a wasteful number, since it uses less digits than its factorization.

2561153391735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170743559457.

The product of its digits is 2551500, while the sum is 51.

The spelling of 2561153391735 in words is "two trillion, five hundred sixty-one billion, one hundred fifty-three million, three hundred ninety-one thousand, seven hundred thirty-five".