7942152987591 has 4 divisors (see below), whose sum is σ = 10589537316792. Its totient is φ = 5294768658392.

The previous prime is 7942152987463. The next prime is 7942152987611. The reversal of 7942152987591 is 1957892512497.

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

It is a cyclic number.

It is not a de Polignac number, because 7942152987591 - 2⁷ = 7942152987463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7942152987091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1323692164596 + ... + 1323692164601.

It is an arithmetic number, because the mean of its divisors is an integer number (2647384329198).

Almost surely, 2^{7942152987591} is an apocalyptic number.

7942152987591 is a deficient number, since it is larger than the sum of its proper divisors (2647384329201).

7942152987591 is a wasteful number, since it uses less digits than its factorization.

7942152987591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647384329200.

The product of its digits is 114307200, while the sum is 69.

The spelling of 7942152987591 in words is "seven trillion, nine hundred forty-two billion, one hundred fifty-two million, nine hundred eighty-seven thousand, five hundred ninety-one".