7857481420330 has 16 divisors (see below), whose sum is σ = 14143716178344. Its totient is φ = 3142937096640.

The previous prime is 7857481420291. The next prime is 7857481420351. The reversal of 7857481420330 is 330241847587.

It can be written as a sum of positive squares in 4 ways, for example, as 4504594494409 + 3352886925921 = 2122403^2 + 1831089^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6336561 + ... + 7474420.

Almost surely, 2^{7857481420330} is an apocalyptic number.

7857481420330 is a deficient number, since it is larger than the sum of its proper divisors (6286234758014).

7857481420330 is a wasteful number, since it uses less digits than its factorization.

7857481420330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13867881.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 7857481420330 in words is "seven trillion, eight hundred fifty-seven billion, four hundred eighty-one million, four hundred twenty thousand, three hundred thirty".