71550151680 has 352 divisors, whose sum is σ = 272922153984. Its totient is φ = 15642722304.

The previous prime is 71550151663. The next prime is 71550151709. The reversal of 71550151680 is 8615105517.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2458494 + ... + 2487426.

Almost surely, 2^71550151680 is an apocalyptic number.

71550151680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71550151680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136461076992).

71550151680 is an abundant number, since it is smaller than the sum of its proper divisors (201372002304).

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

71550151680 is a wasteful number, since it uses less digits than its factorization.

71550151680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28991 (or 28973 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 39.

The spelling of 71550151680 in words is "seventy-one billion, five hundred fifty million, one hundred fifty-one thousand, six hundred eighty".