23151200400001 has 4 divisors (see below), whose sum is σ = 24369684631600. Its totient is φ = 21932716168404.

The previous prime is 23151200399989. The next prime is 23151200400023. The reversal of 23151200400001 is 10000400215132.

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-23151200400001 is a prime.

It is a super-2 number, since 2×23151200400001² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1218484231579 = 23151200400001 / (2 + 3 + 1 + 5 + 1 + 2 + 0 + 0 + 4 + 0 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23151200400301) 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, 609242115771 + ... + 609242115808.

It is an arithmetic number, because the mean of its divisors is an integer number (6092421157900).

Almost surely, 2^{23151200400001} is an apocalyptic number.

It is an amenable number.

23151200400001 is a deficient number, since it is larger than the sum of its proper divisors (1218484231599).

23151200400001 is a wasteful number, since it uses less digits than its factorization.

23151200400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218484231598.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 23151200400001 its reverse (10000400215132), we get a palindrome (33151600615133).

The spelling of 23151200400001 in words is "twenty-three trillion, one hundred fifty-one billion, two hundred million, four hundred thousand, one".