71450751920 has 40 divisors (see below), whose sum is σ = 166237599696. Its totient is φ = 28560584448.

The previous prime is 71450751877. The next prime is 71450751923. The reversal of 71450751920 is 2915705417.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (71450751923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191102 + ... + 423581.

Almost surely, 2^71450751920 is an apocalyptic number.

It is an amenable number.

71450751920 is an abundant number, since it is smaller than the sum of its proper divisors (94786847776).

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

71450751920 is a wasteful number, since it uses less digits than its factorization.

71450751920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616149 (or 616143 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 71450751920 in words is "seventy-one billion, four hundred fifty million, seven hundred fifty-one thousand, nine hundred twenty".