20894183695 has 16 divisors (see below), whose sum is σ = 31259870208. Its totient is φ = 13024945440.

The previous prime is 20894183683. The next prime is 20894183767. The reversal of 20894183695 is 59638149802.

It is not a de Polignac number, because 20894183695 - 2¹⁹ = 20893659407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 27134919 + ... + 27135688.

It is an arithmetic number, because the mean of its divisors is an integer number (1953741888).

Almost surely, 2^20894183695 is an apocalyptic number.

20894183695 is a deficient number, since it is larger than the sum of its proper divisors (10365686513).

20894183695 is a wasteful number, since it uses less digits than its factorization.

20894183695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54270630.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 20894183695 in words is "twenty billion, eight hundred ninety-four million, one hundred eighty-three thousand, six hundred ninety-five".