71601501438 has 24 divisors (see below), whose sum is σ = 155146282200. Its totient is φ = 23865675504.

The previous prime is 71601501431. The next prime is 71601501451. The reversal of 71601501438 is 83410510617.

71601501438 is a `hidden beast` number, since 7 + 1 + 601 + 5 + 0 + 1 + 43 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71601501431) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 193693 + ... + 425111.

It is an arithmetic number, because the mean of its divisors is an integer number (6464428425).

Almost surely, 2^71601501438 is an apocalyptic number.

71601501438 is an abundant number, since it is smaller than the sum of its proper divisors (83544780762).

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

71601501438 is a wasteful number, since it uses less digits than its factorization.

71601501438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248616 (or 248613 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 71601501438 in words is "seventy-one billion, six hundred one million, five hundred one thousand, four hundred thirty-eight".