20692547875 has 8 divisors (see below), whose sum is σ = 25824299904. Its totient is φ = 16554038200.

The previous prime is 20692547861. The next prime is 20692547879. The reversal of 20692547875 is 57874529602.

It is not a de Polignac number, because 20692547875 - 2⁹ = 20692547363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20692547879) 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, 82770067 + ... + 82770316.

It is an arithmetic number, because the mean of its divisors is an integer number (3228037488).

Almost surely, 2^20692547875 is an apocalyptic number.

20692547875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20692547875 is a deficient number, since it is larger than the sum of its proper divisors (5131752029).

20692547875 is an equidigital number, since it uses as much as digits as its factorization.

20692547875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165540398 (or 165540388 counting only the distinct ones).

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

The spelling of 20692547875 in words is "twenty billion, six hundred ninety-two million, five hundred forty-seven thousand, eight hundred seventy-five".