71455199872 has 32 divisors (see below), whose sum is σ = 162688180320. Its totient is φ = 30623656704.

The previous prime is 71455199869. The next prime is 71455199887. The reversal of 71455199872 is 27899155417.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39873658 + ... + 39875449.

It is an arithmetic number, because the mean of its divisors is an integer number (5084005635).

Almost surely, 2^71455199872 is an apocalyptic number.

It is an amenable number.

71455199872 is an abundant number, since it is smaller than the sum of its proper divisors (91232980448).

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

71455199872 is an equidigital number, since it uses as much as digits as its factorization.

71455199872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79749128 (or 79749116 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 58.

The spelling of 71455199872 in words is "seventy-one billion, four hundred fifty-five million, one hundred ninety-nine thousand, eight hundred seventy-two".