20152453415 has 4 divisors (see below), whose sum is σ = 24182944104. Its totient is φ = 16121962728.

The previous prime is 20152453319. The next prime is 20152453469. The reversal of 20152453415 is 51435425102.

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 20152453415 - 2²² = 20148259111 is a prime.

It is a super-2 number, since 2×20152453415² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2015245337 + ... + 2015245346.

It is an arithmetic number, because the mean of its divisors is an integer number (6045736026).

Almost surely, 2^20152453415 is an apocalyptic number.

20152453415 is a deficient number, since it is larger than the sum of its proper divisors (4030490689).

20152453415 is an equidigital number, since it uses as much as digits as its factorization.

20152453415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030490688.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 20152453415 its reverse (51435425102), we get a palindrome (71587878517).

The spelling of 20152453415 in words is "twenty billion, one hundred fifty-two million, four hundred fifty-three thousand, four hundred fifteen".