6611513614644 has 24 divisors (see below), whose sum is σ = 15427324942848. Its totient is φ = 2203772179840.

The previous prime is 6611513614637. The next prime is 6611513614681. The reversal of 6611513614644 is 4464163151166.

It is a happy number.

It is a super-2 number, since 2×6611513614644² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6611513614593 and 6611513614602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7791252 + ... + 8598059.

It is an arithmetic number, because the mean of its divisors is an integer number (642805205952).

Almost surely, 2^{6611513614644} is an apocalyptic number.

It is an amenable number.

6611513614644 is an abundant number, since it is smaller than the sum of its proper divisors (8815811328204).

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

6611513614644 is a wasteful number, since it uses less digits than its factorization.

6611513614644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16422935 (or 16422933 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The spelling of 6611513614644 in words is "six trillion, six hundred eleven billion, five hundred thirteen million, six hundred fourteen thousand, six hundred forty-four".