21192836470 has 32 divisors (see below), whose sum is σ = 41091603840. Its totient is φ = 7823122560.

The previous prime is 21192836449. The next prime is 21192836477. The reversal of 21192836470 is 7463829112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21192836477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579076 + ... + 614584.

It is an arithmetic number, because the mean of its divisors is an integer number (1284112620).

Almost surely, 2^21192836470 is an apocalyptic number.

21192836470 is a deficient number, since it is larger than the sum of its proper divisors (19898767370).

21192836470 is a wasteful number, since it uses less digits than its factorization.

21192836470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40120.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 21192836470 in words is "twenty-one billion, one hundred ninety-two million, eight hundred thirty-six thousand, four hundred seventy".