8451699136253 has 2 divisors, whose sum is σ = 8451699136254. Its totient is φ = 8451699136252.

The previous prime is 8451699136247. The next prime is 8451699136357. The reversal of 8451699136253 is 3526319961548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6124847874649 + 2326851261604 = 2474843^2 + 1525402^2 .

It is a cyclic number.

It is not a de Polignac number, because 8451699136253 - 2³⁶ = 8382979659517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8451699136753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4225849568126 + 4225849568127.

It is an arithmetic number, because the mean of its divisors is an integer number (4225849568127).

Almost surely, 2^{8451699136253} is an apocalyptic number.

It is an amenable number.

8451699136253 is a deficient number, since it is larger than the sum of its proper divisors (1).

8451699136253 is an equidigital number, since it uses as much as digits as its factorization.

8451699136253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41990400, while the sum is 62.

The spelling of 8451699136253 in words is "eight trillion, four hundred fifty-one billion, six hundred ninety-nine million, one hundred thirty-six thousand, two hundred fifty-three".