21000058944867 has 8 divisors (see below), whose sum is σ = 31111198436880. Its totient is φ = 14000039296560.

The previous prime is 21000058944859. The next prime is 21000058944877. The reversal of 21000058944867 is 76844985000012.

It is a happy number.

21000058944867 is a `hidden beast` number, since 2 + 10 + 0 + 0 + 0 + 589 + 4 + 48 + 6 + 7 = 666.

It is not a de Polignac number, because 21000058944867 - 2³ = 21000058944859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000058944857) 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, 388889980434 + ... + 388889980487.

It is an arithmetic number, because the mean of its divisors is an integer number (3888899804610).

Almost surely, 2^{21000058944867} is an apocalyptic number.

21000058944867 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

21000058944867 is a deficient number, since it is larger than the sum of its proper divisors (10111139492013).

21000058944867 is an equidigital number, since it uses as much as digits as its factorization.

21000058944867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777779960930 (or 777779960924 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 21000058944867 in words is "twenty-one trillion, fifty-eight million, nine hundred forty-four thousand, eight hundred sixty-seven".