20263337506 has 4 divisors (see below), whose sum is σ = 30395006262. Its totient is φ = 10131668752.

The previous prime is 20263337489. The next prime is 20263337543. The reversal of 20263337506 is 60573336202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19996505281 + 266832225 = 141409^2 + 16335^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5065834375 + ... + 5065834378.

Almost surely, 2^20263337506 is an apocalyptic number.

20263337506 is a deficient number, since it is larger than the sum of its proper divisors (10131668756).

20263337506 is a wasteful number, since it uses less digits than its factorization.

20263337506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10131668755.

The product of its (nonzero) digits is 136080, while the sum is 37.

The spelling of 20263337506 in words is "twenty billion, two hundred sixty-three million, three hundred thirty-seven thousand, five hundred six".