71040034100 has 72 divisors (see below), whose sum is σ = 176325464448. Its totient is φ = 24336374400.

The previous prime is 71040034073. The next prime is 71040034111. The reversal of 71040034100 is 143004017.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 814610 + ... + 897590.

It is an arithmetic number, because the mean of its divisors is an integer number (2448964784).

Almost surely, 2^71040034100 is an apocalyptic number.

71040034100 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 71040034100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88162732224).

71040034100 is an abundant number, since it is smaller than the sum of its proper divisors (105285430348).

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

71040034100 is a wasteful number, since it uses less digits than its factorization.

71040034100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84225 (or 84218 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 71040034100 its reverse (143004017), we get a palindrome (71183038117).

The spelling of 71040034100 in words is "seventy-one billion, forty million, thirty-four thousand, one hundred".