69866900649 has 160 divisors (see below), whose sum is σ = 132483267840. Its totient is φ = 35710875648.

The previous prime is 69866900633. The next prime is 69866900651. The reversal of 69866900649 is 94600966896.

It is not a de Polignac number, because 69866900649 - 2⁴ = 69866900633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (69866900669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 43421757 + ... + 43423365.

It is an arithmetic number, because the mean of its divisors is an integer number (828020424).

Almost surely, 2^69866900649 is an apocalyptic number.

It is an amenable number.

69866900649 is a deficient number, since it is larger than the sum of its proper divisors (62616367191).

69866900649 is a wasteful number, since it uses less digits than its factorization.

69866900649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 63.

The spelling of 69866900649 in words is "sixty-nine billion, eight hundred sixty-six million, nine hundred thousand, six hundred forty-nine".