20463813550 has 48 divisors (see below), whose sum is σ = 38500817040. Its totient is φ = 8091509760.

The previous prime is 20463813509. The next prime is 20463813553. The reversal of 20463813550 is 5531836402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20463813553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5182677 + ... + 5186623.

It is an arithmetic number, because the mean of its divisors is an integer number (802100355).

Almost surely, 2^20463813550 is an apocalyptic number.

20463813550 is a deficient number, since it is larger than the sum of its proper divisors (18037003490).

20463813550 is a wasteful number, since it uses less digits than its factorization.

20463813550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125 (or 5120 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 20463813550 in words is "twenty billion, four hundred sixty-three million, eight hundred thirteen thousand, five hundred fifty".