10147766645 has 4 divisors (see below), whose sum is σ = 12177319980. Its totient is φ = 8118213312.

The previous prime is 10147766597. The next prime is 10147766659. The reversal of 10147766645 is 54666774101.

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 3537751441 + 6610015204 = 59479^2 + 81302^2 .

It is a cyclic number.

It is not a de Polignac number, because 10147766645 - 2⁸ = 10147766389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10147766645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1014776660 + ... + 1014776669.

It is an arithmetic number, because the mean of its divisors is an integer number (3044329995).

Almost surely, 2^10147766645 is an apocalyptic number.

It is an amenable number.

10147766645 is a deficient number, since it is larger than the sum of its proper divisors (2029553335).

10147766645 is an equidigital number, since it uses as much as digits as its factorization.

10147766645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029553334.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 10147766645 in words is "ten billion, one hundred forty-seven million, seven hundred sixty-six thousand, six hundred forty-five".