71499634740 has 192 divisors, whose sum is σ = 225644267520. Its totient is φ = 19028089728.

The previous prime is 71499634541. The next prime is 71499634769. The reversal of 71499634740 is 4743699417.

71499634740 is a `hidden beast` number, since 71 + 49 + 9 + 63 + 474 + 0 = 666.

It is a super-2 number, since 2×71499634740² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 26548834 + ... + 26551526.

It is an arithmetic number, because the mean of its divisors is an integer number (1175230560).

Almost surely, 2^71499634740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71499634740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112822133760).

71499634740 is an abundant number, since it is smaller than the sum of its proper divisors (154144632780).

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

71499634740 is a wasteful number, since it uses less digits than its factorization.

71499634740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330 (or 3310 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 71499634740 in words is "seventy-one billion, four hundred ninety-nine million, six hundred thirty-four thousand, seven hundred forty".