12360525661 has 4 divisors (see below), whose sum is σ = 13484209824. Its totient is φ = 11236841500.

The previous prime is 12360525659. The next prime is 12360525673. The reversal of 12360525661 is 16652506321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16652506321 = 11 ⋅1513864211.

It is a cyclic number.

It is not a de Polignac number, because 12360525661 - 2¹ = 12360525659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12360525661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12360525161) 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, 561842065 + ... + 561842086.

It is an arithmetic number, because the mean of its divisors is an integer number (3371052456).

Almost surely, 2^12360525661 is an apocalyptic number.

12360525661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12360525661 is a deficient number, since it is larger than the sum of its proper divisors (1123684163).

12360525661 is a wasteful number, since it uses less digits than its factorization.

12360525661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123684162.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 12360525661 in words is "twelve billion, three hundred sixty million, five hundred twenty-five thousand, six hundred sixty-one".