11772705730 has 32 divisors (see below), whose sum is σ = 21933212400. Its totient is φ = 4544289792.

The previous prime is 11772705727. The next prime is 11772705739. The reversal of 11772705730 is 3750727711.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4866597121 + 6906108609 = 69761^2 + 83103^2 .

It is not an unprimeable number, because it can be changed into a prime (11772705739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596094 + ... + 615526.

Almost surely, 2^11772705730 is an apocalyptic number.

11772705730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11772705730 is a deficient number, since it is larger than the sum of its proper divisors (10160506670).

11772705730 is a wasteful number, since it uses less digits than its factorization.

11772705730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21558.

The product of its (nonzero) digits is 72030, while the sum is 40.

The spelling of 11772705730 in words is "eleven billion, seven hundred seventy-two million, seven hundred five thousand, seven hundred thirty".