616543433616 has 80 divisors (see below), whose sum is σ = 1747936124928. Its totient is φ = 185712566400.

The previous prime is 616543433609. The next prime is 616543433621. The reversal of 616543433616 is 616334345616.

It is a happy number.

It is a super-3 number, since 3×616543433616³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 3407920 + ... + 3584271.

Almost surely, 2^616543433616 is an apocalyptic number.

616543433616 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

616543433616 is an abundant number, since it is smaller than the sum of its proper divisors (1131392691312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616543433616 is a wasteful number, since it uses less digits than its factorization.

616543433616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6992380 (or 6992374 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 48.

The spelling of 616543433616 in words is "six hundred sixteen billion, five hundred forty-three million, four hundred thirty-three thousand, six hundred sixteen".