71900249720 has 64 divisors (see below), whose sum is σ = 174249472320. Its totient is φ = 26543268864.

The previous prime is 71900249693. The next prime is 71900249747. The reversal of 71900249720 is 2794200917.

It is an interprime number because it is at equal distance from previous prime (71900249693) and next prime (71900249747).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6022397 + ... + 6034323.

It is an arithmetic number, because the mean of its divisors is an integer number (2722648005).

Almost surely, 2^71900249720 is an apocalyptic number.

It is an amenable number.

71900249720 is an abundant number, since it is smaller than the sum of its proper divisors (102349222600).

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

71900249720 is a wasteful number, since it uses less digits than its factorization.

71900249720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23544 (or 23540 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The spelling of 71900249720 in words is "seventy-one billion, nine hundred million, two hundred forty-nine thousand, seven hundred twenty".