71387858500 has 96 divisors (see below), whose sum is σ = 178266396672. Its totient is φ = 24464534400.

The previous prime is 71387858489. The next prime is 71387858501. The reversal of 71387858500 is 585878317.

It is not an unprimeable number, because it can be changed into a prime (71387858501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11802477 + ... + 11808523.

It is an arithmetic number, because the mean of its divisors is an integer number (1856941632).

Almost surely, 2^71387858500 is an apocalyptic number.

71387858500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71387858500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89133198336).

71387858500 is an abundant number, since it is smaller than the sum of its proper divisors (106878538172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71387858500 is a wasteful number, since it uses less digits than its factorization.

71387858500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9446 (or 9434 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 52.

The spelling of 71387858500 in words is "seventy-one billion, three hundred eighty-seven million, eight hundred fifty-eight thousand, five hundred".