20015140142451 has 8 divisors (see below), whose sum is σ = 26719358829264. Its totient is φ = 13327174108640.

The previous prime is 20015140142353. The next prime is 20015140142477. The reversal of 20015140142451 is 15424104151002.

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

It is a cyclic number.

It is not a de Polignac number, because 20015140142451 - 2⁹ = 20015140141939 is a prime.

It is a super-3 number, since 3×20015140142451³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20015140142351) 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, 4063160376 + ... + 4063165301.

It is an arithmetic number, because the mean of its divisors is an integer number (3339919853658).

Almost surely, 2^{20015140142451} is an apocalyptic number.

20015140142451 is a deficient number, since it is larger than the sum of its proper divisors (6704218686813).

20015140142451 is an equidigital number, since it uses as much as digits as its factorization.

20015140142451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8126326501.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 20015140142451 its reverse (15424104151002), we get a palindrome (35439244293453).

The spelling of 20015140142451 in words is "twenty trillion, fifteen billion, one hundred forty million, one hundred forty-two thousand, four hundred fifty-one".