6722572155 has 16 divisors (see below), whose sum is σ = 11583509280. Its totient is φ = 3309573888.

The previous prime is 6722572147. The next prime is 6722572201. The reversal of 6722572155 is 5512752276.

6722572155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6722572155 - 2³ = 6722572147 is a prime.

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, 17237170 + ... + 17237559.

It is an arithmetic number, because the mean of its divisors is an integer number (723969330).

Almost surely, 2^6722572155 is an apocalyptic number.

6722572155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6722572155 is a deficient number, since it is larger than the sum of its proper divisors (4860937125).

6722572155 is a wasteful number, since it uses less digits than its factorization.

6722572155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34474750.

The product of its digits is 294000, while the sum is 42.

The square root of 6722572155 is about 81991.2931657990. The cubic root of 6722572155 is about 1887.3183280843.

The spelling of 6722572155 in words is "six billion, seven hundred twenty-two million, five hundred seventy-two thousand, one hundred fifty-five".