75777272730 has 24 divisors (see below), whose sum is σ = 197020909332. Its totient is φ = 20207272704.

The previous prime is 75777272729. The next prime is 75777272737. The reversal of 75777272730 is 3727277757.

It can be written as a sum of positive squares in 2 ways, for example, as 73141579809 + 2635692921 = 270447^2 + 51339^2 .

It is not an unprimeable number, because it can be changed into a prime (75777272737) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 420984759 + ... + 420984938.

Almost surely, 2^75777272730 is an apocalyptic number.

75777272730 is an abundant number, since it is smaller than the sum of its proper divisors (121243636602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75777272730 is a wasteful number, since it uses less digits than its factorization.

75777272730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841969710 (or 841969707 counting only the distinct ones).

The product of its (nonzero) digits is 7058940, while the sum is 54.

The spelling of 75777272730 in words is "seventy-five billion, seven hundred seventy-seven million, two hundred seventy-two thousand, seven hundred thirty".