10513472981 has 4 divisors (see below), whose sum is σ = 11469243264. Its totient is φ = 9557702700.

The previous prime is 10513472941. The next prime is 10513472987. The reversal of 10513472981 is 18927431501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18927431501 = 11 ⋅1720675591.

It is a cyclic number.

It is not a de Polignac number, because 10513472981 - 2⁶ = 10513472917 is a prime.

It is a super-2 number, since 2×10513472981² (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 (10513472987) 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, 477885125 + ... + 477885146.

It is an arithmetic number, because the mean of its divisors is an integer number (2867310816).

Almost surely, 2^10513472981 is an apocalyptic number.

10513472981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10513472981 is a deficient number, since it is larger than the sum of its proper divisors (955770283).

10513472981 is an equidigital number, since it uses as much as digits as its factorization.

10513472981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955770282.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 10513472981 in words is "ten billion, five hundred thirteen million, four hundred seventy-two thousand, nine hundred eighty-one".