1621462316044 has 6 divisors (see below), whose sum is σ = 2837559053084. Its totient is φ = 810731158020.

The previous prime is 1621462316017. The next prime is 1621462316069. The reversal of 1621462316044 is 4406132641261.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1621462315988 and 1621462316006.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202682789502 + ... + 202682789509.

Almost surely, 2^{1621462316044} is an apocalyptic number.

It is an amenable number.

1621462316044 is a deficient number, since it is larger than the sum of its proper divisors (1216096737040).

1621462316044 is a wasteful number, since it uses less digits than its factorization.

1621462316044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405365579015 (or 405365579013 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 1621462316044 in words is "one trillion, six hundred twenty-one billion, four hundred sixty-two million, three hundred sixteen thousand, forty-four".