2561352542 has 32 divisors (see below), whose sum is σ = 4585116672. Its totient is φ = 1049235264.

The previous prime is 2561352517. The next prime is 2561352553. The reversal of 2561352542 is 2452531652.

2561352542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 737903 + ... + 741365.

It is an arithmetic number, because the mean of its divisors is an integer number (143284896).

Almost surely, 2^2561352542 is an apocalyptic number.

2561352542 is a deficient number, since it is larger than the sum of its proper divisors (2023764130).

2561352542 is a wasteful number, since it uses less digits than its factorization.

2561352542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792.

The product of its digits is 72000, while the sum is 35.

The square root of 2561352542 is about 50609.8067769479. The cubic root of 2561352542 is about 1368.2216330801.

The spelling of 2561352542 in words is "two billion, five hundred sixty-one million, three hundred fifty-two thousand, five hundred forty-two".