7151549868 has 72 divisors (see below), whose sum is σ = 19188383760. Its totient is φ = 2238059520.

The previous prime is 7151549863. The next prime is 7151549887. The reversal of 7151549868 is 8689451517.

It is a happy number.

7151549868 is a `hidden beast` number, since 7 + 1 + 515 + 49 + 86 + 8 = 666.

It is a super-2 number, since 2×7151549868² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7151549863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236023 + ... + 264593.

It is an arithmetic number, because the mean of its divisors is an integer number (266505330).

Almost surely, 2^7151549868 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 7151549868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9594191880).

7151549868 is an abundant number, since it is smaller than the sum of its proper divisors (12036833892).

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

7151549868 is a wasteful number, since it uses less digits than its factorization.

7151549868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29007 (or 29002 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The square root of 7151549868 is about 84566.8366914596. The cubic root of 7151549868 is about 1926.6377128878.

The spelling of 7151549868 in words is "seven billion, one hundred fifty-one million, five hundred forty-nine thousand, eight hundred sixty-eight".