2541614661 has 12 divisors (see below), whose sum is σ = 3709070092. Its totient is φ = 1676941056.

The previous prime is 2541614659. The next prime is 2541614671. The reversal of 2541614661 is 1664161452.

It can be written as a sum of positive squares in 2 ways, for example, as 1964173761 + 577440900 = 44319^2 + 24030^2 .

It is not a de Polignac number, because 2541614661 - 2¹ = 2541614659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541614611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1454806 + ... + 1456551.

Almost surely, 2^2541614661 is an apocalyptic number.

It is an amenable number.

2541614661 is a deficient number, since it is larger than the sum of its proper divisors (1167455431).

2541614661 is a wasteful number, since it uses less digits than its factorization.

2541614661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911460 (or 2911457 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2541614661 is about 50414.4290952501. The cubic root of 2541614661 is about 1364.6980437423.

The spelling of 2541614661 in words is "two billion, five hundred forty-one million, six hundred fourteen thousand, six hundred sixty-one".