10521300465 has 32 divisors (see below), whose sum is σ = 20143347840. Its totient is φ = 5179716288.

The previous prime is 10521300463. The next prime is 10521300467. The reversal of 10521300465 is 56400312501.

It is an interprime number because it is at equal distance from previous prime (10521300463) and next prime (10521300467).

It is not a de Polignac number, because 10521300465 - 2¹ = 10521300463 is a prime.

It is a super-2 number, since 2×10521300465² (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 not an unprimeable number, because it can be changed into a prime (10521300463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2995767 + ... + 2999276.

It is an arithmetic number, because the mean of its divisors is an integer number (629479620).

Almost surely, 2^10521300465 is an apocalyptic number.

10521300465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10521300465 is a deficient number, since it is larger than the sum of its proper divisors (9622047375).

10521300465 is a wasteful number, since it uses less digits than its factorization.

10521300465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5995070 (or 5995064 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 10521300465 its reverse (56400312501), we get a palindrome (66921612966).

The spelling of 10521300465 in words is "ten billion, five hundred twenty-one million, three hundred thousand, four hundred sixty-five".