616660601000 has 64 divisors (see below), whose sum is σ = 1527867366480. Its totient is φ = 232154572800.

The previous prime is 616660600999. The next prime is 616660601021. The reversal of 616660601000 is 106066616.

It can be written as a sum of positive squares in 8 ways, for example, as 219430412356 + 397230188644 = 468434^2 + 630262^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18120077 + ... + 18154076.

Almost surely, 2^616660601000 is an apocalyptic number.

It is an amenable number.

616660601000 is an abundant number, since it is smaller than the sum of its proper divisors (911206765480).

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

616660601000 is a wasteful number, since it uses less digits than its factorization.

616660601000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36274191 (or 36274177 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

Adding to 616660601000 its reverse (106066616), we get a palindrome (616766667616).

The spelling of 616660601000 in words is "six hundred sixteen billion, six hundred sixty million, six hundred one thousand".