2651603203197 has 12 divisors (see below), whose sum is σ = 4124716094044. Its totient is φ = 1631755817280.

The previous prime is 2651603203141. The next prime is 2651603203217. The reversal of 2651603203197 is 7913023061562.

2651603203197 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 6 + 0 + 320 + 319 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 966827759076 + 1684775444121 = 983274^2 + 1297989^2 .

It is not a de Polignac number, because 2651603203197 - 2¹⁶ = 2651603137661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651603203127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11331637504 + ... + 11331637737.

Almost surely, 2^{2651603203197} is an apocalyptic number.

It is an amenable number.

2651603203197 is a deficient number, since it is larger than the sum of its proper divisors (1473112890847).

2651603203197 is a wasteful number, since it uses less digits than its factorization.

2651603203197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22663275260 (or 22663275257 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 2651603203197 in words is "two trillion, six hundred fifty-one billion, six hundred three million, two hundred three thousand, one hundred ninety-seven".