2104308777778 has 8 divisors (see below), whose sum is σ = 3159438158700. Its totient is φ = 1051162724880.

The previous prime is 2104308777731. The next prime is 2104308777847. The reversal of 2104308777778 is 8777778034012.

It can be written as a sum of positive squares in 2 ways, for example, as 1678157020969 + 426151756809 = 1295437^2 + 652803^2 .

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

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, 495829353 + ... + 495833596.

Almost surely, 2^{2104308777778} is an apocalyptic number.

2104308777778 is a deficient number, since it is larger than the sum of its proper divisors (1055129380922).

2104308777778 is a wasteful number, since it uses less digits than its factorization.

2104308777778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991664012.

The product of its (nonzero) digits is 25815552, while the sum is 61.

The spelling of 2104308777778 in words is "two trillion, one hundred four billion, three hundred eight million, seven hundred seventy-seven thousand, seven hundred seventy-eight".