100400251453 has 4 divisors (see below), whose sum is σ = 100403412928. Its totient is φ = 100397089980.

The previous prime is 100400251411. The next prime is 100400251463. The reversal of 100400251453 is 354152004001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100400251453 is a prime.

It is a super-2 number, since 2×100400251453² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100400251403) 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, 1532613 + ... + 1596778.

It is an arithmetic number, because the mean of its divisors is an integer number (25100853232).

Almost surely, 2^100400251453 is an apocalyptic number.

It is an amenable number.

100400251453 is a deficient number, since it is larger than the sum of its proper divisors (3161475).

100400251453 is an equidigital number, since it uses as much as digits as its factorization.

100400251453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161474.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 100400251453 its reverse (354152004001), we get a palindrome (454552255454).

The spelling of 100400251453 in words is "one hundred billion, four hundred million, two hundred fifty-one thousand, four hundred fifty-three".