20215769514 has 8 divisors (see below), whose sum is σ = 40431539040. Its totient is φ = 6738589836.

The previous prime is 20215769503. The next prime is 20215769527. The reversal of 20215769514 is 41596751202.

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

20215769514 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684647454 + ... + 1684647465.

It is an arithmetic number, because the mean of its divisors is an integer number (5053942380).

Almost surely, 2^20215769514 is an apocalyptic number.

20215769514 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20215769514 is a wasteful number, since it uses less digits than its factorization.

20215769514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369294924.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 20215769514 in words is "twenty billion, two hundred fifteen million, seven hundred sixty-nine thousand, five hundred fourteen".