21380036026 has 32 divisors (see below), whose sum is σ = 35941389120. Its totient is φ = 9478944000.

The previous prime is 21380036017. The next prime is 21380036089. The reversal of 21380036026 is 62063008312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25501 + ... + 208351.

It is an arithmetic number, because the mean of its divisors is an integer number (1123168410).

Almost surely, 2^21380036026 is an apocalyptic number.

21380036026 is a deficient number, since it is larger than the sum of its proper divisors (14561353094).

21380036026 is a wasteful number, since it uses less digits than its factorization.

21380036026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183070.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 21380036026 in words is "twenty-one billion, three hundred eighty million, thirty-six thousand, twenty-six".