69920540999 has 4 divisors (see below), whose sum is σ = 71546600136. Its totient is φ = 68294481864.

The previous prime is 69920540993. The next prime is 69920541037. The reversal of 69920540999 is 99904502996.

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

It is a cyclic number.

It is not a de Polignac number, because 69920540999 - 2⁸ = 69920540743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69920540993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813029504 + ... + 813029589.

It is an arithmetic number, because the mean of its divisors is an integer number (17886650034).

Almost surely, 2^69920540999 is an apocalyptic number.

69920540999 is a deficient number, since it is larger than the sum of its proper divisors (1626059137).

69920540999 is a wasteful number, since it uses less digits than its factorization.

69920540999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626059136.

The product of its (nonzero) digits is 14171760, while the sum is 62.

The spelling of 69920540999 in words is "sixty-nine billion, nine hundred twenty million, five hundred forty thousand, nine hundred ninety-nine".