3806778728151 has 96 divisors (see below), whose sum is σ = 6453323136000. Its totient is φ = 2161458129600.

The previous prime is 3806778728111. The next prime is 3806778728153. The reversal of 3806778728151 is 1518278776083.

3806778728151 is a `hidden beast` number, since 380 + 6 + 7 + 7 + 87 + 28 + 151 = 666.

It is not a de Polignac number, because 3806778728151 - 2¹⁴ = 3806778711767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 95 ways as a sum of consecutive naturals, for example, 1153218201 + ... + 1153221501.

It is an arithmetic number, because the mean of its divisors is an integer number (67222116000).

Almost surely, 2^{3806778728151} is an apocalyptic number.

3806778728151 is a deficient number, since it is larger than the sum of its proper divisors (2646544407849).

3806778728151 is a wasteful number, since it uses less digits than its factorization.

3806778728151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594 (or 5577 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 63.

The spelling of 3806778728151 in words is "three trillion, eight hundred six billion, seven hundred seventy-eight million, seven hundred twenty-eight thousand, one hundred fifty-one".