12651635426653 has 8 divisors (see below), whose sum is σ = 12659712282360. Its totient is φ = 12643559362560.

The previous prime is 12651635426621. The next prime is 12651635426657. The reversal of 12651635426653 is 35662453615621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 118527341284 + 12533108085369 = 344278^2 + 3540213^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12651635426653 - 2⁵ = 12651635426621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12651635426594 and 12651635426603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651635426657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33611733 + ... + 33986053.

It is an arithmetic number, because the mean of its divisors is an integer number (1582464035295).

Almost surely, 2^{12651635426653} is an apocalyptic number.

It is an amenable number.

12651635426653 is a deficient number, since it is larger than the sum of its proper divisors (8076855707).

12651635426653 is a wasteful number, since it uses less digits than its factorization.

12651635426653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395807.

The product of its digits is 23328000, while the sum is 55.

The spelling of 12651635426653 in words is "twelve trillion, six hundred fifty-one billion, six hundred thirty-five million, four hundred twenty-six thousand, six hundred fifty-three".