7155343972 has 18 divisors (see below), whose sum is σ = 14566236342. Its totient is φ = 3066575904.

The previous prime is 7155343961. The next prime is 7155343991. The reversal of 7155343972 is 2793435517.

It can be written as a sum of positive squares in only one way, i.e., 4937310756 + 2218033216 = 70266^2 + 47096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18253233 + ... + 18253624.

Almost surely, 2^7155343972 is an apocalyptic number.

It is an amenable number.

7155343972 is an abundant number, since it is smaller than the sum of its proper divisors (7410892370).

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

7155343972 is a wasteful number, since it uses less digits than its factorization.

7155343972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36506875 (or 36506866 counting only the distinct ones).

The product of its digits is 793800, while the sum is 46.

The square root of 7155343972 is about 84589.2662930705. The cubic root of 7155343972 is about 1926.9783649922.

The spelling of 7155343972 in words is "seven billion, one hundred fifty-five million, three hundred forty-three thousand, nine hundred seventy-two".