2655402136563 has 96 divisors (see below), whose sum is σ = 3975531710976. Its totient is φ = 1575129600000.

The previous prime is 2655402136559. The next prime is 2655402136571. The reversal of 2655402136563 is 3656312045562.

It is a happy number.

It is not a de Polignac number, because 2655402136563 - 2² = 2655402136559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2655402336563) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1256696595 + ... + 1256698707.

It is an arithmetic number, because the mean of its divisors is an integer number (41411788656).

Almost surely, 2^{2655402136563} is an apocalyptic number.

2655402136563 is a deficient number, since it is larger than the sum of its proper divisors (1320129574413).

2655402136563 is a wasteful number, since it uses less digits than its factorization.

2655402136563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617 (or 2606 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 48.

The spelling of 2655402136563 in words is "two trillion, six hundred fifty-five billion, four hundred two million, one hundred thirty-six thousand, five hundred sixty-three".