21248845527994 has 64 divisors (see below), whose sum is σ = 38810117274624. Its totient is φ = 8517593500416.

The previous prime is 21248845527979. The next prime is 21248845528003. The reversal of 21248845527994 is 49972554884212.

It is a super-2 number, since 2×21248845527994² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29192709 + ... + 29911735.

It is an arithmetic number, because the mean of its divisors is an integer number (606408082416).

Almost surely, 2^{21248845527994} is an apocalyptic number.

21248845527994 is a deficient number, since it is larger than the sum of its proper divisors (17561271746630).

21248845527994 is a wasteful number, since it uses less digits than its factorization.

21248845527994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719827.

The product of its digits is 464486400, while the sum is 70.

The spelling of 21248845527994 in words is "twenty-one trillion, two hundred forty-eight billion, eight hundred forty-five million, five hundred twenty-seven thousand, nine hundred ninety-four".