1621662264002 has 8 divisors (see below), whose sum is σ = 2653629159312. Its totient is φ = 737119210900.

The previous prime is 1621662263983. The next prime is 1621662264007. The reversal of 1621662264002 is 2004622661261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1621662264007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36855960524 + ... + 36855960567.

It is an arithmetic number, because the mean of its divisors is an integer number (331703644914).

Almost surely, 2^{1621662264002} is an apocalyptic number.

1621662264002 is a deficient number, since it is larger than the sum of its proper divisors (1031966895310).

1621662264002 is a wasteful number, since it uses less digits than its factorization.

1621662264002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73711921104.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 1621662264002 in words is "one trillion, six hundred twenty-one billion, six hundred sixty-two million, two hundred sixty-four thousand, two".