18777406039383 has 32 divisors (see below), whose sum is σ = 25861053689856. Its totient is φ = 12111545724768.

The previous prime is 18777406039369. The next prime is 18777406039489. The reversal of 18777406039383 is 38393060477781.

It is not a de Polignac number, because 18777406039383 - 2⁴ = 18777406039367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18777406039283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134412816 + ... + 134552442.

It is an arithmetic number, because the mean of its divisors is an integer number (808157927808).

Almost surely, 2^{18777406039383} is an apocalyptic number.

18777406039383 is a deficient number, since it is larger than the sum of its proper divisors (7083647650473).

18777406039383 is a wasteful number, since it uses less digits than its factorization.

18777406039383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149523.

The product of its (nonzero) digits is 128024064, while the sum is 66.

The spelling of 18777406039383 in words is "eighteen trillion, seven hundred seventy-seven billion, four hundred six million, thirty-nine thousand, three hundred eighty-three".