12654637901 has 2 divisors, whose sum is σ = 12654637902. Its totient is φ = 12654637900.

The previous prime is 12654637883. The next prime is 12654637907. The reversal of 12654637901 is 10973645621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7609945225 + 5044692676 = 87235^2 + 71026^2 .

It is a cyclic number.

It is not a de Polignac number, because 12654637901 - 2¹⁸ = 12654375757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12654637907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327318950 + 6327318951.

It is an arithmetic number, because the mean of its divisors is an integer number (6327318951).

Almost surely, 2^12654637901 is an apocalyptic number.

It is an amenable number.

12654637901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12654637901 is an equidigital number, since it uses as much as digits as its factorization.

12654637901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 12654637901 in words is "twelve billion, six hundred fifty-four million, six hundred thirty-seven thousand, nine hundred one".