1616720487288 has 64 divisors (see below), whose sum is σ = 4060451082240. Its totient is φ = 536420809344.

The previous prime is 1616720487269. The next prime is 1616720487289. The reversal of 1616720487288 is 8827840276161.

It is a super-2 number, since 2×1616720487288² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616720487289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56786545 + ... + 56815007.

It is an arithmetic number, because the mean of its divisors is an integer number (63444548160).

Almost surely, 2^{1616720487288} is an apocalyptic number.

It is an amenable number.

1616720487288 is an abundant number, since it is smaller than the sum of its proper divisors (2443730594952).

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

1616720487288 is a wasteful number, since it uses less digits than its factorization.

1616720487288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39308 (or 39304 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 60.

The spelling of 1616720487288 in words is "one trillion, six hundred sixteen billion, seven hundred twenty million, four hundred eighty-seven thousand, two hundred eighty-eight".