6621011145 has 32 divisors (see below), whose sum is σ = 13452215040. Its totient is φ = 3026747520.

The previous prime is 6621011123. The next prime is 6621011183. The reversal of 6621011145 is 5411101266.

6621011145 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 6621011145 - 2⁵ = 6621011113 is a prime.

It is a super-2 number, since 2×6621011145² = 87675577164428422050, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3502236 + ... + 3504125.

It is an arithmetic number, because the mean of its divisors is an integer number (420381720).

Almost surely, 2^6621011145 is an apocalyptic number.

It is an amenable number.

6621011145 is an abundant number, since it is smaller than the sum of its proper divisors (6831203895).

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

6621011145 is a wasteful number, since it uses less digits than its factorization.

6621011145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7006382 (or 7006376 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 6621011145 is about 81369.5959495929. The cubic root of 6621011145 is about 1877.7658635931.

The spelling of 6621011145 in words is "six billion, six hundred twenty-one million, eleven thousand, one hundred forty-five".