71957115385 has 8 divisors (see below), whose sum is σ = 88185741696. Its totient is φ = 56340890160.

The previous prime is 71957115383. The next prime is 71957115397. The reversal of 71957115385 is 58351175917.

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

It is not a de Polignac number, because 71957115385 - 2¹ = 71957115383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71957115383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153100011 + ... + 153100480.

It is an arithmetic number, because the mean of its divisors is an integer number (11023217712).

Almost surely, 2^71957115385 is an apocalyptic number.

It is an amenable number.

71957115385 is a deficient number, since it is larger than the sum of its proper divisors (16228626311).

71957115385 is a wasteful number, since it uses less digits than its factorization.

71957115385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306200543.

The product of its digits is 1323000, while the sum is 52.

The spelling of 71957115385 in words is "seventy-one billion, nine hundred fifty-seven million, one hundred fifteen thousand, three hundred eighty-five".