21706552150 has 24 divisors (see below), whose sum is σ = 40396503744. Its totient is φ = 8677821600.

The previous prime is 21706552099. The next prime is 21706552159. The reversal of 21706552150 is 5125560712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21706552159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27921 + ... + 210220.

It is an arithmetic number, because the mean of its divisors is an integer number (1683187656).

Almost surely, 2^21706552150 is an apocalyptic number.

21706552150 is a deficient number, since it is larger than the sum of its proper divisors (18689951594).

21706552150 is a wasteful number, since it uses less digits than its factorization.

21706552150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239976 (or 239971 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 21706552150 in words is "twenty-one billion, seven hundred six million, five hundred fifty-two thousand, one hundred fifty".