71641623470 has 64 divisors (see below), whose sum is σ = 134099110656. Its totient is φ = 27536728320.

The previous prime is 71641623463. The next prime is 71641623491. The reversal of 71641623470 is 7432614617.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11805377 + ... + 11811443.

It is an arithmetic number, because the mean of its divisors is an integer number (2095298604).

Almost surely, 2^71641623470 is an apocalyptic number.

71641623470 is a deficient number, since it is larger than the sum of its proper divisors (62457487186).

71641623470 is a wasteful number, since it uses less digits than its factorization.

71641623470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6545.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 71641623470 in words is "seventy-one billion, six hundred forty-one million, six hundred twenty-three thousand, four hundred seventy".