10511821047 has 16 divisors (see below), whose sum is σ = 17250168320. Its totient is φ = 5544696672.

The previous prime is 10511821009. The next prime is 10511821063. The reversal of 10511821047 is 74012811501.

It is not a de Polignac number, because 10511821047 - 2¹⁰ = 10511820023 is a prime.

It is a super-2 number, since 2×10511821047² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10511821147) 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 15 ways as a sum of consecutive naturals, for example, 19252147 + ... + 19252692.

It is an arithmetic number, because the mean of its divisors is an integer number (1078135520).

Almost surely, 2^10511821047 is an apocalyptic number.

10511821047 is a deficient number, since it is larger than the sum of its proper divisors (6738347273).

10511821047 is a wasteful number, since it uses less digits than its factorization.

10511821047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38504862.

The product of its (nonzero) digits is 2240, while the sum is 30.

The spelling of 10511821047 in words is "ten billion, five hundred eleven million, eight hundred twenty-one thousand, forty-seven".