7020545139 has 24 divisors (see below), whose sum is σ = 10678805280. Its totient is φ = 4435782912.

The previous prime is 7020545137. The next prime is 7020545149. The reversal of 7020545139 is 9315450207.

7020545139 is a `hidden beast` number, since 70 + 20 + 54 + 513 + 9 = 666.

It is not a de Polignac number, because 7020545139 - 2¹ = 7020545137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7020545137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133014 + ... + 178139.

It is an arithmetic number, because the mean of its divisors is an integer number (444950220).

Almost surely, 2^7020545139 is an apocalyptic number.

7020545139 is a deficient number, since it is larger than the sum of its proper divisors (3658260141).

7020545139 is a wasteful number, since it uses less digits than its factorization.

7020545139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311291 (or 311288 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 7020545139 is about 83788.6933840121. The cubic root of 7020545139 is about 1914.8008517940.

The spelling of 7020545139 in words is "seven billion, twenty million, five hundred forty-five thousand, one hundred thirty-nine".