71649694530 has 192 divisors, whose sum is σ = 201981911040. Its totient is φ = 18240209856.

The previous prime is 71649694471. The next prime is 71649694573. The reversal of 71649694530 is 3549694617.

71649694530 is a `hidden beast` number, since 7 + 1 + 6 + 49 + 69 + 4 + 530 = 666.

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

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 95 ways as a sum of consecutive naturals, for example, 40184019 + ... + 40185801.

It is an arithmetic number, because the mean of its divisors is an integer number (1051989120).

Almost surely, 2^71649694530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71649694530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100990955520).

71649694530 is an abundant number, since it is smaller than the sum of its proper divisors (130332216510).

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

71649694530 is a wasteful number, since it uses less digits than its factorization.

71649694530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547 (or 2535 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 71649694530 in words is "seventy-one billion, six hundred forty-nine million, six hundred ninety-four thousand, five hundred thirty".