21470666503016 has 32 divisors (see below), whose sum is σ = 40757752657440. Its totient is φ = 10602029114688.

The previous prime is 21470666502983. The next prime is 21470666503019. The reversal of 21470666503016 is 61030566607412.

It is not an unprimeable number, because it can be changed into a prime (21470666503019) 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, 4261946 + ... + 7817001.

It is an arithmetic number, because the mean of its divisors is an integer number (1273679770545).

Almost surely, 2^{21470666503016} is an apocalyptic number.

It is an amenable number.

21470666503016 is a deficient number, since it is larger than the sum of its proper divisors (19287086154424).

21470666503016 is a wasteful number, since it uses less digits than its factorization.

21470666503016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081713 (or 12081709 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 21470666503016 in words is "twenty-one trillion, four hundred seventy billion, six hundred sixty-six million, five hundred three thousand, sixteen".