7139820554 has 8 divisors (see below), whose sum is σ = 10712702628. Its totient is φ = 3568919680.

The previous prime is 7139820511. The next prime is 7139820559. The reversal of 7139820554 is 4550289317.

It can be written as a sum of positive squares in 2 ways, for example, as 7130958025 + 8862529 = 84445^2 + 2977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7139820559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486257 + ... + 500724.

Almost surely, 2^7139820554 is an apocalyptic number.

7139820554 is a deficient number, since it is larger than the sum of its proper divisors (3572882074).

7139820554 is a wasteful number, since it uses less digits than its factorization.

7139820554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990600.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 7139820554 is about 84497.4588611989. The cubic root of 7139820554 is about 1925.5838385600.

The spelling of 7139820554 in words is "seven billion, one hundred thirty-nine million, eight hundred twenty thousand, five hundred fifty-four".