10511051778 has 32 divisors (see below), whose sum is σ = 23363147520. Its totient is φ = 3502895760.

The previous prime is 10511051767. The next prime is 10511051779. The reversal of 10511051778 is 87715011501.

10511051778 is a `hidden beast` number, since 10 + 51 + 10 + 517 + 78 = 666.

It is a super-2 number, since 2×10511051778² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10511051779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251751 + ... + 290517.

It is an arithmetic number, because the mean of its divisors is an integer number (730098360).

Almost surely, 2^10511051778 is an apocalyptic number.

10511051778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10511051778 is an abundant number, since it is smaller than the sum of its proper divisors (12852095742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10511051778 is a wasteful number, since it uses less digits than its factorization.

10511051778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43799 (or 43793 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 36.

The spelling of 10511051778 in words is "ten billion, five hundred eleven million, fifty-one thousand, seven hundred seventy-eight".