1616254221998 has 32 divisors (see below), whose sum is σ = 2627006376960. Its totient is φ = 741355428960.

The previous prime is 1616254221979. The next prime is 1616254222013. The reversal of 1616254221998 is 8991224526161.

It is a super-2 number, since 2×1616254221998² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24764573 + ... + 24829751.

It is an arithmetic number, because the mean of its divisors is an integer number (82093949280).

Almost surely, 2^{1616254221998} is an apocalyptic number.

1616254221998 is a deficient number, since it is larger than the sum of its proper divisors (1010752154962).

1616254221998 is a wasteful number, since it uses less digits than its factorization.

1616254221998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71072.

The product of its digits is 3732480, while the sum is 56.

The spelling of 1616254221998 in words is "one trillion, six hundred sixteen billion, two hundred fifty-four million, two hundred twenty-one thousand, nine hundred ninety-eight".