977540529957791 has 8 divisors (see below), whose sum is σ = 998377792461504. Its totient is φ = 956704872780160.

The previous prime is 977540529957787. The next prime is 977540529957811. The reversal of 977540529957791 is 197759925045779.

977540529957791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 977540529957791 - 2² = 977540529957787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977540559957791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400100630 + ... + 402536451.

It is an arithmetic number, because the mean of its divisors is an integer number (124797224057688).

Almost surely, 2^{977540529957791} is an apocalyptic number.

977540529957791 is a deficient number, since it is larger than the sum of its proper divisors (20837262503713).

977540529957791 is a wasteful number, since it uses less digits than its factorization.

977540529957791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802663041.

The product of its (nonzero) digits is 15752961000, while the sum is 86.

The spelling of 977540529957791 in words is "nine hundred seventy-seven trillion, five hundred forty billion, five hundred twenty-nine million, nine hundred fifty-seven thousand, seven hundred ninety-one".