71780532563 has 8 divisors (see below), whose sum is σ = 73196250048. Its totient is φ = 70367088064.

The previous prime is 71780532559. The next prime is 71780532587. The reversal of 71780532563 is 36523508717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71780532563 - 2² = 71780532559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71780552563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504395 + ... + 630852.

It is an arithmetic number, because the mean of its divisors is an integer number (9149531256).

Almost surely, 2^71780532563 is an apocalyptic number.

71780532563 is a deficient number, since it is larger than the sum of its proper divisors (1415717485).

71780532563 is a wasteful number, since it uses less digits than its factorization.

71780532563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136493.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 71780532563 in words is "seventy-one billion, seven hundred eighty million, five hundred thirty-two thousand, five hundred sixty-three".