71440601772 has 24 divisors (see below), whose sum is σ = 166797617392. Its totient is φ = 23798836800.

The previous prime is 71440601767. The next prime is 71440601773. The reversal of 71440601772 is 27710604417.

It is a self number, because there is not a number n which added to its sum of digits gives 71440601772.

It is not an unprimeable number, because it can be changed into a prime (71440601773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1816879 + ... + 1855782.

Almost surely, 2^71440601772 is an apocalyptic number.

It is an amenable number.

71440601772 is an abundant number, since it is smaller than the sum of its proper divisors (95357015620).

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

71440601772 is a wasteful number, since it uses less digits than its factorization.

71440601772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674289 (or 3674287 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The spelling of 71440601772 in words is "seventy-one billion, four hundred forty million, six hundred one thousand, seven hundred seventy-two".