34778704851 has 18 divisors (see below), whose sum is σ = 54805731708. Its totient is φ = 21076878360.

The previous prime is 34778704847. The next prime is 34778704861. The reversal of 34778704851 is 15840787743.

34778704851 is a `hidden beast` number, since 3 + 477 + 87 + 0 + 48 + 51 = 666.

It is not a de Polignac number, because 34778704851 - 2² = 34778704847 is a prime.

It is a super-2 number, since 2×34778704851² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (34778704811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1846186 + ... + 1864928.

Almost surely, 2^34778704851 is an apocalyptic number.

34778704851 is a deficient number, since it is larger than the sum of its proper divisors (20027026857).

34778704851 is an frugal number, since it uses more digits than its factorization.

34778704851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37503 (or 18757 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 34778704851 in words is "thirty-four billion, seven hundred seventy-eight million, seven hundred four thousand, eight hundred fifty-one".