1621465734116 has 12 divisors (see below), whose sum is σ = 2837578837632. Its totient is φ = 810728923368.

The previous prime is 1621465734089. The next prime is 1621465734139. The reversal of 1621465734116 is 6114375641261.

It is a super-2 number, since 2×1621465734116² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63221 + ... + 1801923.

It is an arithmetic number, because the mean of its divisors is an integer number (236464903136).

Almost surely, 2^{1621465734116} is an apocalyptic number.

It is an amenable number.

1621465734116 is a deficient number, since it is larger than the sum of its proper divisors (1216113103516).

1621465734116 is a wasteful number, since it uses less digits than its factorization.

1621465734116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971850 (or 1971848 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The spelling of 1621465734116 in words is "one trillion, six hundred twenty-one billion, four hundred sixty-five million, seven hundred thirty-four thousand, one hundred sixteen".