69998734521 has 32 divisors (see below), whose sum is σ = 106196154240. Its totient is φ = 45545068800.

The previous prime is 69998734471. The next prime is 69998734627. The reversal of 69998734521 is 12543789996.

69998734521 is a `hidden beast` number, since 6 + 99 + 98 + 7 + 3 + 452 + 1 = 666.

It is not a de Polignac number, because 69998734521 - 2¹⁷ = 69998603449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69998734121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1510861 + ... + 1556501.

It is an arithmetic number, because the mean of its divisors is an integer number (3318629820).

Almost surely, 2^69998734521 is an apocalyptic number.

It is an amenable number.

69998734521 is a deficient number, since it is larger than the sum of its proper divisors (36197419719).

69998734521 is a wasteful number, since it uses less digits than its factorization.

69998734521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47014 (or 47008 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 69998734521 in words is "sixty-nine billion, nine hundred ninety-eight million, seven hundred thirty-four thousand, five hundred twenty-one".