69930813481 has 4 divisors (see below), whose sum is σ = 69948976464. Its totient is φ = 69912650500.

The previous prime is 69930813479. The next prime is 69930813487. The reversal of 69930813481 is 18431803996.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 69930813481 - 2¹ = 69930813479 is a prime.

It is a super-2 number, since 2×69930813481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69930813487) 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, 9075715 + ... + 9083416.

It is an arithmetic number, because the mean of its divisors is an integer number (17487244116).

Almost surely, 2^69930813481 is an apocalyptic number.

It is an amenable number.

69930813481 is a deficient number, since it is larger than the sum of its proper divisors (18162983).

69930813481 is a wasteful number, since it uses less digits than its factorization.

69930813481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18162982.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 69930813481 in words is "sixty-nine billion, nine hundred thirty million, eight hundred thirteen thousand, four hundred eighty-one".