6537488315551 has 2 divisors, whose sum is σ = 6537488315552. Its totient is φ = 6537488315550.

The previous prime is 6537488315521. The next prime is 6537488315563. The reversal of 6537488315551 is 1555138847356.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6537488315551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6537488315551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6537488315521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3268744157775 + 3268744157776.

It is an arithmetic number, because the mean of its divisors is an integer number (3268744157776).

Almost surely, 2^{6537488315551} is an apocalyptic number.

6537488315551 is a deficient number, since it is larger than the sum of its proper divisors (1).

6537488315551 is an equidigital number, since it uses as much as digits as its factorization.

6537488315551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480000, while the sum is 61.

The spelling of 6537488315551 in words is "six trillion, five hundred thirty-seven billion, four hundred eighty-eight million, three hundred fifteen thousand, five hundred fifty-one".