10520001765 has 160 divisors (see below), whose sum is σ = 23300766720. Its totient is φ = 4421869056.

The previous prime is 10520001743. The next prime is 10520001781. The reversal of 10520001765 is 56710002501.

It is not a de Polignac number, because 10520001765 - 2⁸ = 10520001509 is a prime.

It is a super-2 number, since 2×10520001765² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 14631076 + ... + 14631794.

It is an arithmetic number, because the mean of its divisors is an integer number (145629792).

Almost surely, 2^10520001765 is an apocalyptic number.

10520001765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10520001765 is an abundant number, since it is smaller than the sum of its proper divisors (12780764955).

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

10520001765 is a wasteful number, since it uses less digits than its factorization.

10520001765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The spelling of 10520001765 in words is "ten billion, five hundred twenty million, one thousand, seven hundred sixty-five".