20736632015 has 16 divisors (see below), whose sum is σ = 28574881920. Its totient is φ = 14287439520.

The previous prime is 20736631999. The next prime is 20736632071. The reversal of 20736632015 is 51023663702.

It is not a de Polignac number, because 20736632015 - 2⁴ = 20736631999 is a prime.

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, 9920789 + ... + 9922878.

It is an arithmetic number, because the mean of its divisors is an integer number (1785930120).

Almost surely, 2^20736632015 is an apocalyptic number.

20736632015 is a deficient number, since it is larger than the sum of its proper divisors (7838249905).

20736632015 is a wasteful number, since it uses less digits than its factorization.

20736632015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19843702.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 20736632015 in words is "twenty billion, seven hundred thirty-six million, six hundred thirty-two thousand, fifteen".