3806778728152 has 16 divisors (see below), whose sum is σ = 7303703374440. Its totient is φ = 1859124494976.

The previous prime is 3806778728111. The next prime is 3806778728153. The reversal of 3806778728152 is 2518278776083.

It is a super-2 number, since 2×3806778728152² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806778728153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5533108273 + ... + 5533108960.

Almost surely, 2^{3806778728152} is an apocalyptic number.

It is an amenable number.

3806778728152 is a deficient number, since it is larger than the sum of its proper divisors (3496924646288).

3806778728152 is a wasteful number, since it uses less digits than its factorization.

3806778728152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11066217282 (or 11066217278 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 64.

The spelling of 3806778728152 in words is "three trillion, eight hundred six billion, seven hundred seventy-eight million, seven hundred twenty-eight thousand, one hundred fifty-two".