11407550661 has 24 divisors (see below), whose sum is σ = 17910940320. Its totient is φ = 6954415776.

The previous prime is 11407550653. The next prime is 11407550669. The reversal of 11407550661 is 16605570411.

It is a happy number.

11407550661 is a `hidden beast` number, since 1 + 1 + 40 + 7 + 550 + 6 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (11407550653) and next prime (11407550669).

It is not a de Polignac number, because 11407550661 - 2³ = 11407550653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11407550669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443091 + ... + 468128.

It is an arithmetic number, because the mean of its divisors is an integer number (746289180).

Almost surely, 2^11407550661 is an apocalyptic number.

It is an amenable number.

11407550661 is a deficient number, since it is larger than the sum of its proper divisors (6503389659).

11407550661 is a wasteful number, since it uses less digits than its factorization.

11407550661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911345 (or 911342 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 11407550661 in words is "eleven billion, four hundred seven million, five hundred fifty thousand, six hundred sixty-one".