12780673077 has 16 divisors (see below), whose sum is σ = 17162389760. Its totient is φ = 8459785152.

The previous prime is 12780673001. The next prime is 12780673093. The reversal of 12780673077 is 77037608721.

It is a happy number.

It is not a de Polignac number, because 12780673077 - 2¹² = 12780668981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12780672077) 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, 660699 + ... + 679767.

It is an arithmetic number, because the mean of its divisors is an integer number (1072649360).

Almost surely, 2^12780673077 is an apocalyptic number.

It is an amenable number.

12780673077 is a deficient number, since it is larger than the sum of its proper divisors (4381716683).

12780673077 is a wasteful number, since it uses less digits than its factorization.

12780673077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20652.

The product of its (nonzero) digits is 691488, while the sum is 48.

The spelling of 12780673077 in words is "twelve billion, seven hundred eighty million, six hundred seventy-three thousand, seventy-seven".