3988781435123 has 16 divisors (see below), whose sum is σ = 4142532741120. Its totient is φ = 3838206640800.

The previous prime is 3988781435113. The next prime is 3988781435143. The reversal of 3988781435123 is 3215341878893.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3988781435123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3988781435113) 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, 466808 + ... + 2862773.

It is an arithmetic number, because the mean of its divisors is an integer number (258908296320).

Almost surely, 2^{3988781435123} is an apocalyptic number.

3988781435123 is a deficient number, since it is larger than the sum of its proper divisors (153751305997).

3988781435123 is a wasteful number, since it uses less digits than its factorization.

3988781435123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330058.

The product of its digits is 34836480, while the sum is 62.

The spelling of 3988781435123 in words is "three trillion, nine hundred eighty-eight billion, seven hundred eighty-one million, four hundred thirty-five thousand, one hundred twenty-three".