10520011720 has 16 divisors (see below), whose sum is σ = 23670026460. Its totient is φ = 4208004672.

The previous prime is 10520011703. The next prime is 10520011729. The reversal of 10520011720 is 2711002501.

It can be written as a sum of positive squares in 2 ways, for example, as 10506660004 + 13351716 = 102502^2 + 3654^2 .

It is a super-2 number, since 2×10520011720² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10520011729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131500107 + ... + 131500186.

Almost surely, 2^10520011720 is an apocalyptic number.

10520011720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10520011720 is an abundant number, since it is smaller than the sum of its proper divisors (13150014740).

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

10520011720 is a wasteful number, since it uses less digits than its factorization.

10520011720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263000304 (or 263000300 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The spelling of 10520011720 in words is "ten billion, five hundred twenty million, eleven thousand, seven hundred twenty".