616736219064 has 128 divisors (see below), whose sum is σ = 1819301990400. Its totient is φ = 170492728320.

The previous prime is 616736219051. The next prime is 616736219069. The reversal of 616736219064 is 460912637616.

It is a junction number, because it is equal to n+sod(n) for n = 616736218998 and 616736219016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616736219069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39453202 + ... + 39468830.

It is an arithmetic number, because the mean of its divisors is an integer number (14213296800).

Almost surely, 2^616736219064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616736219064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (909650995200).

616736219064 is an abundant number, since it is smaller than the sum of its proper divisors (1202565771336).

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

616736219064 is a wasteful number, since it uses less digits than its factorization.

616736219064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23253 (or 23249 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 616736219064 in words is "six hundred sixteen billion, seven hundred thirty-six million, two hundred nineteen thousand, sixty-four".