10520505555 has 48 divisors (see below), whose sum is σ = 20432404224. Its totient is φ = 4600263360.

The previous prime is 10520505533. The next prime is 10520505559. The reversal of 10520505555 is 55550502501.

It is not a de Polignac number, because 10520505555 - 2⁹ = 10520505043 is a prime.

It is a super-2 number, since 2×10520505555² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10520505559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 294261 + ... + 328070.

It is an arithmetic number, because the mean of its divisors is an integer number (425675088).

Almost surely, 2^10520505555 is an apocalyptic number.

10520505555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10520505555 is a deficient number, since it is larger than the sum of its proper divisors (9911898669).

10520505555 is a wasteful number, since it uses less digits than its factorization.

10520505555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622376 (or 622369 counting only the distinct ones).

The product of its (nonzero) digits is 31250, while the sum is 33.

The spelling of 10520505555 in words is "ten billion, five hundred twenty million, five hundred five thousand, five hundred fifty-five".