20124551451395 has 4 divisors (see below), whose sum is σ = 24149461741680. Its totient is φ = 16099641161112.

The previous prime is 20124551451379. The next prime is 20124551451397. The reversal of 20124551451395 is 59315415542102.

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

It is a cyclic number.

It is not a de Polignac number, because 20124551451395 - 2⁴ = 20124551451379 is a prime.

It is a super-2 number, since 2×20124551451395² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20124551451397) 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, 2012455145135 + ... + 2012455145144.

It is an arithmetic number, because the mean of its divisors is an integer number (6037365435420).

Almost surely, 2^{20124551451395} is an apocalyptic number.

20124551451395 is a deficient number, since it is larger than the sum of its proper divisors (4024910290285).

20124551451395 is an equidigital number, since it uses as much as digits as its factorization.

20124551451395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024910290284.

The product of its (nonzero) digits is 1080000, while the sum is 47.

Adding to 20124551451395 its reverse (59315415542102), we get a palindrome (79439966993497).

The spelling of 20124551451395 in words is "twenty trillion, one hundred twenty-four billion, five hundred fifty-one million, four hundred fifty-one thousand, three hundred ninety-five".