77532743732 has 12 divisors (see below), whose sum is σ = 136672684260. Its totient is φ = 38483405376.

The previous prime is 77532743731. The next prime is 77532743747. The reversal of 77532743732 is 23734723577.

It can be written as a sum of positive squares in 2 ways, for example, as 21058072996 + 56474670736 = 145114^2 + 237644^2 .

It is a super-2 number, since 2×77532743732² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77532743731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70741007 + ... + 70742102.

It is an arithmetic number, because the mean of its divisors is an integer number (11389390355).

Almost surely, 2^77532743732 is an apocalyptic number.

It is an amenable number.

77532743732 is a deficient number, since it is larger than the sum of its proper divisors (59139940528).

77532743732 is a wasteful number, since it uses less digits than its factorization.

77532743732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141483250 (or 141483248 counting only the distinct ones).

The product of its digits is 5186160, while the sum is 50.

The spelling of 77532743732 in words is "seventy-seven billion, five hundred thirty-two million, seven hundred forty-three thousand, seven hundred thirty-two".