12779689495490 has 8 divisors (see below), whose sum is σ = 23003441091900. Its totient is φ = 5111875798192.

The previous prime is 12779689495481. The next prime is 12779689495501. The reversal of 12779689495490 is 9459498697721.

12779689495490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12430920114001 + 348769381489 = 3525751^2 + 590567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12779689495490² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638984474765 + ... + 638984474784.

Almost surely, 2^{12779689495490} is an apocalyptic number.

12779689495490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12779689495490 is a deficient number, since it is larger than the sum of its proper divisors (10223751596410).

12779689495490 is a wasteful number, since it uses less digits than its factorization.

12779689495490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277968949556.

The product of its (nonzero) digits is 2469035520, while the sum is 80.

The spelling of 12779689495490 in words is "twelve trillion, seven hundred seventy-nine billion, six hundred eighty-nine million, four hundred ninety-five thousand, four hundred ninety".