69908400621 has 32 divisors (see below), whose sum is σ = 107648795520. Its totient is φ = 44799599232.

The previous prime is 69908400589. The next prime is 69908400649. The reversal of 69908400621 is 12600480996.

It is a happy number.

It is not a de Polignac number, because 69908400621 - 2⁵ = 69908400589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69918400621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338640 + ... + 504473.

It is an arithmetic number, because the mean of its divisors is an integer number (3364024860).

Almost surely, 2^69908400621 is an apocalyptic number.

It is an amenable number.

69908400621 is a deficient number, since it is larger than the sum of its proper divisors (37740394899).

69908400621 is a wasteful number, since it uses less digits than its factorization.

69908400621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843242 (or 843236 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 69908400621 in words is "sixty-nine billion, nine hundred eight million, four hundred thousand, six hundred twenty-one".