7001201655 has 32 divisors (see below), whose sum is σ = 14224665600. Its totient is φ = 3200548896.

The previous prime is 7001201653. The next prime is 7001201671. The reversal of 7001201655 is 5561021007.

7001201655 is a `hidden beast` number, since 7 + 0 + 0 + 1 + 2 + 0 + 1 + 655 = 666.

It is not a de Polignac number, because 7001201655 - 2¹ = 7001201653 is a prime.

It is a super-2 number, since 2×7001201655² = 98033649227949478050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7001201651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3703395 + ... + 3705284.

It is an arithmetic number, because the mean of its divisors is an integer number (444520800).

Almost surely, 2^7001201655 is an apocalyptic number.

7001201655 is an abundant number, since it is smaller than the sum of its proper divisors (7223463945).

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

7001201655 is a wasteful number, since it uses less digits than its factorization.

7001201655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408700 (or 7408694 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 7001201655 is about 83673.1836074139. The cubic root of 7001201655 is about 1913.0406376199.

The spelling of 7001201655 in words is "seven billion, one million, two hundred one thousand, six hundred fifty-five".