2562461661 has 16 divisors (see below), whose sum is σ = 3435315840. Its totient is φ = 1698977280.

The previous prime is 2562461659. The next prime is 2562461723. The reversal of 2562461661 is 1661642652.

It is not a de Polignac number, because 2562461661 - 2¹ = 2562461659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2562461611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687160 + ... + 690878.

It is an arithmetic number, because the mean of its divisors is an integer number (214707240).

Almost surely, 2^2562461661 is an apocalyptic number.

It is an amenable number.

2562461661 is a deficient number, since it is larger than the sum of its proper divisors (872854179).

2562461661 is a wasteful number, since it uses less digits than its factorization.

2562461661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4916.

The product of its digits is 103680, while the sum is 39.

The square root of 2562461661 is about 50620.7631412250. The cubic root of 2562461661 is about 1368.4190940696.

The spelling of 2562461661 in words is "two billion, five hundred sixty-two million, four hundred sixty-one thousand, six hundred sixty-one".