7957281386771 has 8 divisors (see below), whose sum is σ = 8126739888960. Its totient is φ = 7787829328128.

The previous prime is 7957281386729. The next prime is 7957281386779. The reversal of 7957281386771 is 1776831827597.

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 7957281386771 - 2⁶ = 7957281386707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7957281386695 and 7957281386704.

It is not an unprimeable number, because it can be changed into a prime (7957281386779) 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 7 ways as a sum of consecutive naturals, for example, 927395 + ... + 4095683.

It is an arithmetic number, because the mean of its divisors is an integer number (1015842486120).

Almost surely, 2^{7957281386771} is an apocalyptic number.

7957281386771 is a deficient number, since it is larger than the sum of its proper divisors (169458502189).

7957281386771 is a wasteful number, since it uses less digits than its factorization.

7957281386771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221773.

The product of its digits is 248935680, while the sum is 71.

The spelling of 7957281386771 in words is "seven trillion, nine hundred fifty-seven billion, two hundred eighty-one million, three hundred eighty-six thousand, seven hundred seventy-one".