3806778117416 has 8 divisors (see below), whose sum is σ = 7137708970170. Its totient is φ = 1903389058704.

The previous prime is 3806778117397. The next prime is 3806778117421. The reversal of 3806778117416 is 6147118776083.

It can be written as a sum of positive squares in only one way, i.e., 2649583084516 + 1157195032900 = 1627754^2 + 1075730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237923632331 + ... + 237923632346.

Almost surely, 2^{3806778117416} is an apocalyptic number.

It is an amenable number.

3806778117416 is a deficient number, since it is larger than the sum of its proper divisors (3330930852754).

3806778117416 is a wasteful number, since it uses less digits than its factorization.

3806778117416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475847264683 (or 475847264679 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 3806778117416 in words is "three trillion, eight hundred six billion, seven hundred seventy-eight million, one hundred seventeen thousand, four hundred sixteen".