1253734412691 has 8 divisors (see below), whose sum is σ = 1671655062784. Its totient is φ = 835818352200.

The previous prime is 1253734412663. The next prime is 1253734412713. The reversal of 1253734412691 is 1962144373521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253734412691 - 2⁷ = 1253734412563 is a prime.

It is a super-2 number, since 2×1253734412691² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1253734412691.

It is not an unprimeable number, because it can be changed into a prime (1253734412611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449335 + ... + 1646016.

It is an arithmetic number, because the mean of its divisors is an integer number (208956882848).

Almost surely, 2^{1253734412691} is an apocalyptic number.

1253734412691 is a deficient number, since it is larger than the sum of its proper divisors (417920650093).

1253734412691 is a wasteful number, since it uses less digits than its factorization.

1253734412691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294801.

The product of its digits is 1088640, while the sum is 48.

The spelling of 1253734412691 in words is "one trillion, two hundred fifty-three billion, seven hundred thirty-four million, four hundred twelve thousand, six hundred ninety-one".