12077765730 has 24 divisors (see below), whose sum is σ = 31402191132. Its totient is φ = 3220737504.

The previous prime is 12077765723. The next prime is 12077765747. The reversal of 12077765730 is 3756777021.

12077765730 is a `hidden beast` number, since 1 + 2 + 0 + 7 + 7 + 76 + 573 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11458203849 + 619561881 = 107043^2 + 24891^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67098609 + ... + 67098788.

Almost surely, 2^12077765730 is an apocalyptic number.

12077765730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12077765730 is an abundant number, since it is smaller than the sum of its proper divisors (19324425402).

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

12077765730 is a wasteful number, since it uses less digits than its factorization.

12077765730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134197410 (or 134197407 counting only the distinct ones).

The product of its (nonzero) digits is 432180, while the sum is 45.

The spelling of 12077765730 in words is "twelve billion, seventy-seven million, seven hundred sixty-five thousand, seven hundred thirty".