2628794681477 has 4 divisors (see below), whose sum is σ = 2658331700460. Its totient is φ = 2599257662496.

The previous prime is 2628794681347. The next prime is 2628794681497. The reversal of 2628794681477 is 7741864978262.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1733820028516 + 894974652961 = 1316746^2 + 946031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2628794681477 - 2⁸ = 2628794681221 is a prime.

It is a super-2 number, since 2×2628794681477² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2628794681477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628794681497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14768509358 + ... + 14768509535.

It is an arithmetic number, because the mean of its divisors is an integer number (664582925115).

Almost surely, 2^{2628794681477} is an apocalyptic number.

It is an amenable number.

2628794681477 is a deficient number, since it is larger than the sum of its proper divisors (29537018983).

2628794681477 is an equidigital number, since it uses as much as digits as its factorization.

2628794681477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29537018982.

The product of its digits is 455196672, while the sum is 71.

The spelling of 2628794681477 in words is "two trillion, six hundred twenty-eight billion, seven hundred ninety-four million, six hundred eighty-one thousand, four hundred seventy-seven".