21858292027 has 8 divisors (see below), whose sum is σ = 25679671920. Its totient is φ = 18342622560.

The previous prime is 21858291997. The next prime is 21858292073. The reversal of 21858292027 is 72029285812.

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

It is a cyclic number.

It is not a de Polignac number, because 21858292027 - 2¹¹ = 21858289979 is a prime.

It is a super-2 number, since 2×21858292027² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21858292327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76427452 + ... + 76427737.

It is an arithmetic number, because the mean of its divisors is an integer number (3209958990).

Almost surely, 2^21858292027 is an apocalyptic number.

21858292027 is a deficient number, since it is larger than the sum of its proper divisors (3821379893).

21858292027 is a wasteful number, since it uses less digits than its factorization.

21858292027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152855213.

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 21858292027 in words is "twenty-one billion, eight hundred fifty-eight million, two hundred ninety-two thousand, twenty-seven".