1264514497787 has 2 divisors, whose sum is σ = 1264514497788. Its totient is φ = 1264514497786.

The previous prime is 1264514497769. The next prime is 1264514497793. The reversal of 1264514497787 is 7877944154621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264514497787 is a prime.

It is a super-2 number, since 2×1264514497787² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1264514497717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632257248893 + 632257248894.

It is an arithmetic number, because the mean of its divisors is an integer number (632257248894).

Almost surely, 2^{1264514497787} is an apocalyptic number.

1264514497787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264514497787 is an equidigital number, since it uses as much as digits as its factorization.

1264514497787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94832640, while the sum is 65.

The spelling of 1264514497787 in words is "one trillion, two hundred sixty-four billion, five hundred fourteen million, four hundred ninety-seven thousand, seven hundred eighty-seven".