1253501443164 has 12 divisors (see below), whose sum is σ = 2924836700744. Its totient is φ = 417833814384.

The previous prime is 1253501443147. The next prime is 1253501443177. The reversal of 1253501443164 is 4613441053521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52229226787 + ... + 52229226810.

Almost surely, 2^{1253501443164} is an apocalyptic number.

It is an amenable number.

1253501443164 is an abundant number, since it is smaller than the sum of its proper divisors (1671335257580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253501443164 is a wasteful number, since it uses less digits than its factorization.

1253501443164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104458453604 (or 104458453602 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

Adding to 1253501443164 its reverse (4613441053521), we get a palindrome (5866942496685).

The spelling of 1253501443164 in words is "one trillion, two hundred fifty-three billion, five hundred one million, four hundred forty-three thousand, one hundred sixty-four".