20693411954 has 16 divisors (see below), whose sum is σ = 31236394392. Its totient is φ = 10281345408.

The previous prime is 20693411953. The next prime is 20693411957. The reversal of 20693411954 is 45911439602.

It can be written as a sum of positive squares in 4 ways, for example, as 20599999729 + 93412225 = 143527^2 + 9665^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20693411953) 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, 667502 + ... + 697814.

Almost surely, 2^20693411954 is an apocalyptic number.

20693411954 is a deficient number, since it is larger than the sum of its proper divisors (10542982438).

20693411954 is a wasteful number, since it uses less digits than its factorization.

20693411954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32461.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 20693411954 in words is "twenty billion, six hundred ninety-three million, four hundred eleven thousand, nine hundred fifty-four".