1021664962473 has 16 divisors (see below), whose sum is σ = 1442966829696. Its totient is φ = 640770773760.

The previous prime is 1021664962453. The next prime is 1021664962477. The reversal of 1021664962473 is 3742694661201.

It is not a de Polignac number, because 1021664962473 - 2⁸ = 1021664962217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021664962477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4159261 + ... + 4398042.

It is an arithmetic number, because the mean of its divisors is an integer number (90185426856).

Almost surely, 2^{1021664962473} is an apocalyptic number.

It is an amenable number.

1021664962473 is a deficient number, since it is larger than the sum of its proper divisors (421301867223).

1021664962473 is a wasteful number, since it uses less digits than its factorization.

1021664962473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559664.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 1021664962473 in words is "one trillion, twenty-one billion, six hundred sixty-four million, nine hundred sixty-two thousand, four hundred seventy-three".