10510391897 has 4 divisors (see below), whose sum is σ = 10513855716. Its totient is φ = 10506928080.

The previous prime is 10510391887. The next prime is 10510391909. The reversal of 10510391897 is 79819301501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9923347456 + 587044441 = 99616^2 + 24229^2 .

It is a cyclic number.

It is not a de Polignac number, because 10510391897 - 2⁶ = 10510391833 is a prime.

It is a super-2 number, since 2×10510391897² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10510391887) 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, 1727354 + ... + 1733427.

It is an arithmetic number, because the mean of its divisors is an integer number (2628463929).

Almost surely, 2^10510391897 is an apocalyptic number.

It is an amenable number.

10510391897 is a deficient number, since it is larger than the sum of its proper divisors (3463819).

10510391897 is an equidigital number, since it uses as much as digits as its factorization.

10510391897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463818.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 10510391897 in words is "ten billion, five hundred ten million, three hundred ninety-one thousand, eight hundred ninety-seven".