69861028613 has 4 divisors (see below), whose sum is σ = 69956337708. Its totient is φ = 69765719520.

The previous prime is 69861028603. The next prime is 69861028631. The reversal of 69861028613 is 31682016896.

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 68049504769 + 1811523844 = 260863^2 + 42562^2 .

It is a cyclic number.

It is not a de Polignac number, because 69861028613 - 2⁴ = 69861028597 is a prime.

It is a super-3 number, since 3×69861028613³ (a number of 34 digits) contains 333 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 (69861028603) 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, 47653448 + ... + 47654913.

It is an arithmetic number, because the mean of its divisors is an integer number (17489084427).

Almost surely, 2^69861028613 is an apocalyptic number.

It is an amenable number.

69861028613 is a deficient number, since it is larger than the sum of its proper divisors (95309095).

69861028613 is an equidigital number, since it uses as much as digits as its factorization.

69861028613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95309094.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 69861028613 in words is "sixty-nine billion, eight hundred sixty-one million, twenty-eight thousand, six hundred thirteen".