71211853400 has 48 divisors (see below), whose sum is σ = 165661558440. Its totient is φ = 28468569600.

The previous prime is 71211853373. The next prime is 71211853403. The reversal of 71211853400 is 435811217.

It is a super-2 number, since 2×71211853400² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71211853403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255215 + ... + 455585.

Almost surely, 2^71211853400 is an apocalyptic number.

It is an amenable number.

71211853400 is an abundant number, since it is smaller than the sum of its proper divisors (94449705040).

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

71211853400 is a wasteful number, since it uses less digits than its factorization.

71211853400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202164 (or 202155 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 71211853400 in words is "seventy-one billion, two hundred eleven million, eight hundred fifty-three thousand, four hundred".