71556230232 has 24 divisors (see below), whose sum is σ = 193798123740. Its totient is φ = 23852076720.

The previous prime is 71556230167. The next prime is 71556230233. The reversal of 71556230232 is 23203265517.

71556230232 is a `hidden beast` number, since 7 + 1 + 5 + 5 + 623 + 0 + 23 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71556230233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 496918194 + ... + 496918337.

Almost surely, 2^71556230232 is an apocalyptic number.

71556230232 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71556230232 is an abundant number, since it is smaller than the sum of its proper divisors (122241893508).

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

71556230232 is a wasteful number, since it uses less digits than its factorization.

71556230232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993836543 (or 993836536 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

Adding to 71556230232 its reverse (23203265517), we get a palindrome (94759495749).

The spelling of 71556230232 in words is "seventy-one billion, five hundred fifty-six million, two hundred thirty thousand, two hundred thirty-two".