47977593615397 has 4 divisors (see below), whose sum is σ = 50799805004556. Its totient is φ = 45155382226240.

The previous prime is 47977593615359. The next prime is 47977593615403. The reversal of 47977593615397 is 79351639577974.

47977593615397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 6926586²+1.

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 37352803549636 + 10624790065761 = 6111694^2 + 3259569^2 .

It is a cyclic number.

It is not a de Polignac number, because 47977593615397 - 2⁷ = 47977593615269 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 47977593615397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47977593615317) 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, 1411105694554 + ... + 1411105694587.

It is an arithmetic number, because the mean of its divisors is an integer number (12699951251139).

Almost surely, 2^{47977593615397} is an apocalyptic number.

It is an amenable number.

47977593615397 is a deficient number, since it is larger than the sum of its proper divisors (2822211389159).

47977593615397 is a wasteful number, since it uses less digits than its factorization.

47977593615397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822211389158.

The product of its digits is 9451776600, while the sum is 82.

The spelling of 47977593615397 in words is "forty-seven trillion, nine hundred seventy-seven billion, five hundred ninety-three million, six hundred fifteen thousand, three hundred ninety-seven".