1252662891659 has 4 divisors (see below), whose sum is σ = 1253435664960. Its totient is φ = 1251890118360.

The previous prime is 1252662891643. The next prime is 1252662891679. The reversal of 1252662891659 is 9561982662521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1252662891659 - 2⁴ = 1252662891643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252662891629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386384219 + ... + 386387460.

It is an arithmetic number, because the mean of its divisors is an integer number (313358916240).

Almost surely, 2^{1252662891659} is an apocalyptic number.

1252662891659 is a deficient number, since it is larger than the sum of its proper divisors (772773301).

1252662891659 is an equidigital number, since it uses as much as digits as its factorization.

1252662891659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772773300.

The product of its digits is 27993600, while the sum is 62.

The spelling of 1252662891659 in words is "one trillion, two hundred fifty-two billion, six hundred sixty-two million, eight hundred ninety-one thousand, six hundred fifty-nine".