20436632307 has 48 divisors (see below), whose sum is σ = 36706488000. Its totient is φ = 10668589056.

The previous prime is 20436632273. The next prime is 20436632309. The reversal of 20436632307 is 70323663402.

It is not a de Polignac number, because 20436632307 - 2⁶ = 20436632243 is a prime.

It is a super-2 number, since 2×20436632307² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20436632309) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49182 + ... + 208067.

It is an arithmetic number, because the mean of its divisors is an integer number (764718500).

Almost surely, 2^20436632307 is an apocalyptic number.

20436632307 is a deficient number, since it is larger than the sum of its proper divisors (16269855693).

20436632307 is a wasteful number, since it uses less digits than its factorization.

20436632307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257372 (or 257369 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 36.

The spelling of 20436632307 in words is "twenty billion, four hundred thirty-six million, six hundred thirty-two thousand, three hundred seven".