20932915539 has 8 divisors (see below), whose sum is σ = 27986606080. Its totient is φ = 13917251016.

The previous prime is 20932915529. The next prime is 20932915567. The reversal of 20932915539 is 93551923902.

It is a happy number.

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

It is not a de Polignac number, because 20932915539 - 2³¹ = 18785431891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20932915529) 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, 9505219 + ... + 9507420.

It is an arithmetic number, because the mean of its divisors is an integer number (3498325760).

Almost surely, 2^20932915539 is an apocalyptic number.

20932915539 is a deficient number, since it is larger than the sum of its proper divisors (7053690541).

20932915539 is a wasteful number, since it uses less digits than its factorization.

20932915539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19013009.

The product of its (nonzero) digits is 656100, while the sum is 48.

The spelling of 20932915539 in words is "twenty billion, nine hundred thirty-two million, nine hundred fifteen thousand, five hundred thirty-nine".