3879902115765 has 144 divisors (see below), whose sum is σ = 7503161329872. Its totient is φ = 1852501487616.

The previous prime is 3879902115721. The next prime is 3879902115781. The reversal of 3879902115765 is 5675112099783.

3879902115765 is a `hidden beast` number, since 38 + 7 + 9 + 9 + 0 + 21 + 1 + 576 + 5 = 666.

It can be written as a sum of positive squares in 24 ways, for example, as 3504406464036 + 375495651729 = 1872006^2 + 612777^2 .

It is not a de Polignac number, because 3879902115765 - 2¹⁶ = 3879902050229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 88051479 + ... + 88095531.

It is an arithmetic number, because the mean of its divisors is an integer number (52105287013).

Almost surely, 2^{3879902115765} is an apocalyptic number.

It is an amenable number.

3879902115765 is a deficient number, since it is larger than the sum of its proper divisors (3623259214107).

3879902115765 is a wasteful number, since it uses less digits than its factorization.

3879902115765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44440 (or 44424 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 63.

The spelling of 3879902115765 in words is "three trillion, eight hundred seventy-nine billion, nine hundred two million, one hundred fifteen thousand, seven hundred sixty-five".