71772381783 has 12 divisors (see below), whose sum is σ = 103998260808. Its totient is φ = 47697311760.

The previous prime is 71772381757. The next prime is 71772381817. The reversal of 71772381783 is 38718327717.

It is not a de Polignac number, because 71772381783 - 2¹² = 71772377687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71772381743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12575553 + ... + 12581258.

It is an arithmetic number, because the mean of its divisors is an integer number (8666521734).

Almost surely, 2^71772381783 is an apocalyptic number.

71772381783 is a deficient number, since it is larger than the sum of its proper divisors (32225879025).

71772381783 is a wasteful number, since it uses less digits than its factorization.

71772381783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25157134 (or 25157131 counting only the distinct ones).

The product of its digits is 2765952, while the sum is 54.

The spelling of 71772381783 in words is "seventy-one billion, seven hundred seventy-two million, three hundred eighty-one thousand, seven hundred eighty-three".