21852364390 has 8 divisors (see below), whose sum is σ = 39334255920. Its totient is φ = 8740945752.

The previous prime is 21852364367. The next prime is 21852364409. The reversal of 21852364390 is 9346325812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092618210 + ... + 1092618229.

It is an arithmetic number, because the mean of its divisors is an integer number (4916781990).

Almost surely, 2^21852364390 is an apocalyptic number.

21852364390 is a deficient number, since it is larger than the sum of its proper divisors (17481891530).

21852364390 is a wasteful number, since it uses less digits than its factorization.

21852364390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185236446.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 21852364390 in words is "twenty-one billion, eight hundred fifty-two million, three hundred sixty-four thousand, three hundred ninety".