7901579217338 has 4 divisors (see below), whose sum is σ = 11852368826010. Its totient is φ = 3950789608668.

The previous prime is 7901579217307. The next prime is 7901579217383. The reversal of 7901579217338 is 8337129751097.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7887599229169 + 13979988169 = 2808487^2 + 118237^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975394804333 + ... + 1975394804336.

Almost surely, 2^{7901579217338} is an apocalyptic number.

7901579217338 is a deficient number, since it is larger than the sum of its proper divisors (3950789608672).

7901579217338 is a wasteful number, since it uses less digits than its factorization.

7901579217338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950789608671.

The product of its (nonzero) digits is 20003760, while the sum is 62.

The spelling of 7901579217338 in words is "seven trillion, nine hundred one billion, five hundred seventy-nine million, two hundred seventeen thousand, three hundred thirty-eight".