21245796455194 has 16 divisors (see below), whose sum is σ = 31873320198720. Its totient is φ = 10621356530400.

The previous prime is 21245796455159. The next prime is 21245796455231. The reversal of 21245796455194 is 49155469754212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584572987 + ... + 584609329.

It is an arithmetic number, because the mean of its divisors is an integer number (1992082512420).

Almost surely, 2^{21245796455194} is an apocalyptic number.

21245796455194 is a deficient number, since it is larger than the sum of its proper divisors (10627523743526).

21245796455194 is a wasteful number, since it uses less digits than its factorization.

21245796455194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70725.

The product of its digits is 108864000, while the sum is 64.

The spelling of 21245796455194 in words is "twenty-one trillion, two hundred forty-five billion, seven hundred ninety-six million, four hundred fifty-five thousand, one hundred ninety-four".