21455367090366 has 32 divisors (see below), whose sum is σ = 46945841040000. Its totient is φ = 6482997082080.

The previous prime is 21455367090341. The next prime is 21455367090457. The reversal of 21455367090366 is 66309076355412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465709516 + ... + 465755583.

It is an arithmetic number, because the mean of its divisors is an integer number (1467057532500).

Almost surely, 2^{21455367090366} is an apocalyptic number.

21455367090366 is an abundant number, since it is smaller than the sum of its proper divisors (25490473949634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21455367090366 is a wasteful number, since it uses less digits than its factorization.

21455367090366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931465464.

The product of its (nonzero) digits is 24494400, while the sum is 57.

The spelling of 21455367090366 in words is "twenty-one trillion, four hundred fifty-five billion, three hundred sixty-seven million, ninety thousand, three hundred sixty-six".