10520215868 has 24 divisors (see below), whose sum is σ = 19459791120. Its totient is φ = 4962574080.

The previous prime is 10520215843. The next prime is 10520215891. The reversal of 10520215868 is 86851202501.

It is a super-2 number, since 2×10520215868² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268871 + ... + 305502.

It is an arithmetic number, because the mean of its divisors is an integer number (810824630).

Almost surely, 2^10520215868 is an apocalyptic number.

It is an amenable number.

10520215868 is a deficient number, since it is larger than the sum of its proper divisors (8939575252).

10520215868 is a wasteful number, since it uses less digits than its factorization.

10520215868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574637 (or 574635 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The spelling of 10520215868 in words is "ten billion, five hundred twenty million, two hundred fifteen thousand, eight hundred sixty-eight".