20450468415 has 16 divisors (see below), whose sum is σ = 35237730528. Its totient is φ = 10067922816.

The previous prime is 20450468407. The next prime is 20450468429. The reversal of 20450468415 is 51486405402.

It is a happy number.

It is not a de Polignac number, because 20450468415 - 2³ = 20450468407 is a prime.

It is a super-2 number, since 2×20450468415² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52436904 + ... + 52437293.

It is an arithmetic number, because the mean of its divisors is an integer number (2202358158).

Almost surely, 2^20450468415 is an apocalyptic number.

20450468415 is a deficient number, since it is larger than the sum of its proper divisors (14787262113).

20450468415 is a wasteful number, since it uses less digits than its factorization.

20450468415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104874218.

The product of its (nonzero) digits is 153600, while the sum is 39.

The spelling of 20450468415 in words is "twenty billion, four hundred fifty million, four hundred sixty-eight thousand, four hundred fifteen".