6156891516 has 48 divisors (see below), whose sum is σ = 14960010240. Its totient is φ = 1968388800.

The previous prime is 6156891509. The next prime is 6156891553. The reversal of 6156891516 is 6151986516.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 6036 + ... + 111131.

It is an arithmetic number, because the mean of its divisors is an integer number (311666880).

Almost surely, 2^6156891516 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 6156891516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7480005120).

6156891516 is an abundant number, since it is smaller than the sum of its proper divisors (8803118724).

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

6156891516 is a wasteful number, since it uses less digits than its factorization.

6156891516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117354 (or 117352 counting only the distinct ones).

The product of its digits is 388800, while the sum is 48.

The square root of 6156891516 is about 78465.8621057591. The cubic root of 6156891516 is about 1832.8228916210.

The spelling of 6156891516 in words is "six billion, one hundred fifty-six million, eight hundred ninety-one thousand, five hundred sixteen".