655103613651 has 4 divisors (see below), whose sum is σ = 873471484872. Its totient is φ = 436735742432.

The previous prime is 655103613601. The next prime is 655103613667. The reversal of 655103613651 is 156316301556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 655103613651 - 2⁹ = 655103613139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655103613601) 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, 109183935606 + ... + 109183935611.

It is an arithmetic number, because the mean of its divisors is an integer number (218367871218).

Almost surely, 2^655103613651 is an apocalyptic number.

655103613651 is a deficient number, since it is larger than the sum of its proper divisors (218367871221).

655103613651 is a wasteful number, since it uses less digits than its factorization.

655103613651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218367871220.

The product of its (nonzero) digits is 243000, while the sum is 42.

The spelling of 655103613651 in words is "six hundred fifty-five billion, one hundred three million, six hundred thirteen thousand, six hundred fifty-one".