20692696445 has 4 divisors (see below), whose sum is σ = 24831235740. Its totient is φ = 16554157152.

The previous prime is 20692696403. The next prime is 20692696469. The reversal of 20692696445 is 54469629602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54469629602 = 2 ⋅27234814801.

It can be written as a sum of positive squares in 2 ways, for example, as 14874973369 + 5817723076 = 121963^2 + 76274^2 .

It is a cyclic number.

It is not a de Polignac number, because 20692696445 - 2¹⁰ = 20692695421 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2069269640 + ... + 2069269649.

It is an arithmetic number, because the mean of its divisors is an integer number (6207808935).

Almost surely, 2^20692696445 is an apocalyptic number.

It is an amenable number.

20692696445 is a deficient number, since it is larger than the sum of its proper divisors (4138539295).

20692696445 is an equidigital number, since it uses as much as digits as its factorization.

20692696445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138539294.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 20692696445 in words is "twenty billion, six hundred ninety-two million, six hundred ninety-six thousand, four hundred forty-five".