77273143432 has 16 divisors (see below), whose sum is σ = 148803013260. Its totient is φ = 37592339904.

The previous prime is 77273143429. The next prime is 77273143471. The reversal of 77273143432 is 23434137277.

It can be written as a sum of positive squares in 2 ways, for example, as 68243202756 + 9029940676 = 261234^2 + 95026^2 .

It is a super-2 number, since 2×77273143432² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130528663 + ... + 130529254.

Almost surely, 2^77273143432 is an apocalyptic number.

It is an amenable number.

77273143432 is a deficient number, since it is larger than the sum of its proper divisors (71529869828).

77273143432 is a wasteful number, since it uses less digits than its factorization.

77273143432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261057960 (or 261057956 counting only the distinct ones).

The product of its digits is 592704, while the sum is 43.

The spelling of 77273143432 in words is "seventy-seven billion, two hundred seventy-three million, one hundred forty-three thousand, four hundred thirty-two".