1252854618463 has 4 divisors (see below), whose sum is σ = 1431833849680. Its totient is φ = 1073875387248.

The previous prime is 1252854618437. The next prime is 1252854618523. The reversal of 1252854618463 is 3648164582521.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252854618463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252854612463) 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, 89489615598 + ... + 89489615611.

It is an arithmetic number, because the mean of its divisors is an integer number (357958462420).

Almost surely, 2^{1252854618463} is an apocalyptic number.

1252854618463 is a deficient number, since it is larger than the sum of its proper divisors (178979231217).

1252854618463 is an equidigital number, since it uses as much as digits as its factorization.

1252854618463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178979231216.

The product of its digits is 11059200, while the sum is 55.

The spelling of 1252854618463 in words is "one trillion, two hundred fifty-two billion, eight hundred fifty-four million, six hundred eighteen thousand, four hundred sixty-three".