10520418551 has 4 divisors (see below), whose sum is σ = 10521214704. Its totient is φ = 10519622400.

The previous prime is 10520418521. The next prime is 10520418577. The reversal of 10520418551 is 15581402501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15581402501 = 7 ⋅2225914643.

It is a cyclic number.

It is not a de Polignac number, because 10520418551 - 2⁶ = 10520418487 is a prime.

It is a super-2 number, since 2×10520418551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10520418521) 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, 377915 + ... + 404796.

It is an arithmetic number, because the mean of its divisors is an integer number (2630303676).

Almost surely, 2^10520418551 is an apocalyptic number.

10520418551 is a deficient number, since it is larger than the sum of its proper divisors (796153).

10520418551 is an equidigital number, since it uses as much as digits as its factorization.

10520418551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796152.

The product of its (nonzero) digits is 8000, while the sum is 32.

The spelling of 10520418551 in words is "ten billion, five hundred twenty million, four hundred eighteen thousand, five hundred fifty-one".