1616640241636 has 48 divisors (see below), whose sum is σ = 3314096739072. Its totient is φ = 675548006400.

The previous prime is 1616640241631. The next prime is 1616640241639. The reversal of 1616640241636 is 6361420466161.

It is a super-2 number, since 2×1616640241636² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616640241631) 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, 1533241 + ... + 2363071.

It is an arithmetic number, because the mean of its divisors is an integer number (69043682064).

Almost surely, 2^{1616640241636} 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 1616640241636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1657048369536).

1616640241636 is an abundant number, since it is smaller than the sum of its proper divisors (1697456497436).

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

1616640241636 is a wasteful number, since it uses less digits than its factorization.

1616640241636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831580 (or 831578 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 1616640241636 in words is "one trillion, six hundred sixteen billion, six hundred forty million, two hundred forty-one thousand, six hundred thirty-six".