38778441340851 has 6 divisors (see below), whose sum is σ = 56013304159020. Its totient is φ = 25852294227228.

The previous prime is 38778441340831. The next prime is 38778441340861. The reversal of 38778441340851 is 15804314487783.

It is a happy number.

38778441340851 is a `hidden beast` number, since 3 + 8 + 7 + 78 + 441 + 3 + 40 + 85 + 1 = 666.

It is not a de Polignac number, because 38778441340851 - 2¹¹ = 38778441338803 is a prime.

It is a super-2 number, since 2×38778441340851² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38778441340811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2154357852261 + ... + 2154357852278.

It is an arithmetic number, because the mean of its divisors is an integer number (9335550693170).

Almost surely, 2^{38778441340851} is an apocalyptic number.

38778441340851 is a deficient number, since it is larger than the sum of its proper divisors (17234862818169).

38778441340851 is a wasteful number, since it uses less digits than its factorization.

38778441340851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4308715704545 (or 4308715704542 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 63.

The spelling of 38778441340851 in words is "thirty-eight trillion, seven hundred seventy-eight billion, four hundred forty-one million, three hundred forty thousand, eight hundred fifty-one".