71622049640 has 32 divisors (see below), whose sum is σ = 169631172000. Its totient is φ = 27140986944.

The previous prime is 71622049573. The next prime is 71622049649. The reversal of 71622049640 is 4694022617.

It is not an unprimeable number, because it can be changed into a prime (71622049649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47119010 + ... + 47120529.

It is an arithmetic number, because the mean of its divisors is an integer number (5300974125).

Almost surely, 2^71622049640 is an apocalyptic number.

It is an amenable number.

71622049640 is an abundant number, since it is smaller than the sum of its proper divisors (98009122360).

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

71622049640 is a wasteful number, since it uses less digits than its factorization.

71622049640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94239569 (or 94239565 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 71622049640 in words is "seventy-one billion, six hundred twenty-two million, forty-nine thousand, six hundred forty".