77483732881 has 9 divisors (see below), whose sum is σ = 77863873723. Its totient is φ = 77105443000.

The previous prime is 77483732791. The next prime is 77483732929. The reversal of 77483732881 is 18823738477.

The square root of 77483732881 is 278359.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1252522881 + 76231210000 = 35391^2 + 276100^2 .

It is not a de Polignac number, because 77483732881 - 2⁹ = 77483732369 is a prime.

It is a super-2 number, since 2×77483732881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77483732981) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69867555 + ... + 69868663.

Almost surely, 2^77483732881 is an apocalyptic number.

77483732881 is the 278359-th square number.

77483732881 is the 139180-th centered octagonal number.

It is an amenable number.

77483732881 is a deficient number, since it is larger than the sum of its proper divisors (380140842).

77483732881 is an frugal number, since it uses more digits than its factorization.

77483732881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720 (or 1360 counting only the distinct ones).

The product of its digits is 12644352, while the sum is 58.

The spelling of 77483732881 in words is "seventy-seven billion, four hundred eighty-three million, seven hundred thirty-two thousand, eight hundred eighty-one".