2455661511 has 6 divisors (see below), whose sum is σ = 3547066640. Its totient is φ = 1637107668.

The previous prime is 2455661437. The next prime is 2455661513. The reversal of 2455661511 is 1151665542.

2455661511 is a `hidden beast` number, since 2 + 45 + 566 + 1 + 51 + 1 = 666.

It is not a de Polignac number, because 2455661511 - 2¹⁵ = 2455628743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455661513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136425631 + ... + 136425648.

Almost surely, 2^2455661511 is an apocalyptic number.

2455661511 is a deficient number, since it is larger than the sum of its proper divisors (1091405129).

2455661511 is a wasteful number, since it uses less digits than its factorization.

2455661511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272851285 (or 272851282 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 2455661511 is about 49554.6315797020. The cubic root of 2455661511 is about 1349.1373567116.

The spelling of 2455661511 in words is "two billion, four hundred fifty-five million, six hundred sixty-one thousand, five hundred eleven".