71782959457 has 16 divisors (see below), whose sum is σ = 78892187904. Its totient is φ = 64772730000.

The previous prime is 71782959421. The next prime is 71782959461. The reversal of 71782959457 is 75495928717.

It is not a de Polignac number, because 71782959457 - 2²⁷ = 71648741729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71782957457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783082 + ... + 869932.

It is an arithmetic number, because the mean of its divisors is an integer number (4930761744).

Almost surely, 2^71782959457 is an apocalyptic number.

It is an amenable number.

71782959457 is a deficient number, since it is larger than the sum of its proper divisors (7109228447).

71782959457 is a wasteful number, since it uses less digits than its factorization.

71782959457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87420.

The product of its digits is 44452800, while the sum is 64.

The spelling of 71782959457 in words is "seventy-one billion, seven hundred eighty-two million, nine hundred fifty-nine thousand, four hundred fifty-seven".