7939100020001 has 4 divisors (see below), whose sum is σ = 7945259136900. Its totient is φ = 7932940903104.

The previous prime is 7939100019953. The next prime is 7939100020003. The reversal of 7939100020001 is 1000200019397.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6877532475025 + 1061567544976 = 2622505^2 + 1030324^2 .

It is a cyclic number.

It is not a de Polignac number, because 7939100020001 - 2¹⁰ = 7939100018977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7939100020001.

It is not an unprimeable number, because it can be changed into a prime (7939100020003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3079556516 + ... + 3079559093.

It is an arithmetic number, because the mean of its divisors is an integer number (1986314784225).

Almost surely, 2^{7939100020001} is an apocalyptic number.

It is an amenable number.

7939100020001 is a deficient number, since it is larger than the sum of its proper divisors (6159116899).

7939100020001 is a wasteful number, since it uses less digits than its factorization.

7939100020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159116898.

The product of its (nonzero) digits is 3402, while the sum is 32.

Adding to 7939100020001 its reverse (1000200019397), we get a palindrome (8939300039398).

The spelling of 7939100020001 in words is "seven trillion, nine hundred thirty-nine billion, one hundred million, twenty thousand, one".