20545928767 has 32 divisors (see below), whose sum is σ = 25786785920. Its totient is φ = 16032556800.

The previous prime is 20545928761. The next prime is 20545928789. The reversal of 20545928767 is 76782954502.

It is not a de Polignac number, because 20545928767 - 2³ = 20545928759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20545928761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1113517 + ... + 1131817.

It is an arithmetic number, because the mean of its divisors is an integer number (805837060).

Almost surely, 2^20545928767 is an apocalyptic number.

20545928767 is a deficient number, since it is larger than the sum of its proper divisors (5240857153).

20545928767 is an equidigital number, since it uses as much as digits as its factorization.

20545928767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18420 (or 18394 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 20545928767 in words is "twenty billion, five hundred forty-five million, nine hundred twenty-eight thousand, seven hundred sixty-seven".