21146006043 has 14 divisors (see below), whose sum is σ = 31704506724. Its totient is φ = 14097336876.

The previous prime is 21146006039. The next prime is 21146006083. The reversal of 21146006043 is 34060064112.

21146006043 is a `hidden beast` number, since 2 + 1 + 14 + 600 + 6 + 0 + 43 = 666.

It is not a de Polignac number, because 21146006043 - 2² = 21146006039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21146005998 and 21146006016.

It is not an unprimeable number, because it can be changed into a prime (21146006083) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 14502705 + ... + 14504162.

Almost surely, 2^21146006043 is an apocalyptic number.

21146006043 is a deficient number, since it is larger than the sum of its proper divisors (10558500681).

21146006043 is an frugal number, since it uses more digits than its factorization.

21146006043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29006885 (or 29006870 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 21146006043 in words is "twenty-one billion, one hundred forty-six million, six thousand, forty-three".