13407624661 has 4 divisors (see below), whose sum is σ = 13417963372. Its totient is φ = 13397285952.

The previous prime is 13407624647. The next prime is 13407624677. The reversal of 13407624661 is 16642670431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16642670431 = 41 ⋅405918791.

It can be written as a sum of positive squares in 2 ways, for example, as 11901719025 + 1505905636 = 109095^2 + 38806^2 .

It is a cyclic number.

It is not a de Polignac number, because 13407624661 - 2¹⁵ = 13407591893 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 (13407624361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5167410 + ... + 5170003.

It is an arithmetic number, because the mean of its divisors is an integer number (3354490843).

Almost surely, 2^13407624661 is an apocalyptic number.

It is an amenable number.

13407624661 is a deficient number, since it is larger than the sum of its proper divisors (10338711).

13407624661 is a wasteful number, since it uses less digits than its factorization.

13407624661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10338710.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 13407624661 in words is "thirteen billion, four hundred seven million, six hundred twenty-four thousand, six hundred sixty-one".