69921012123 has 24 divisors (see below), whose sum is σ = 103427171328. Its totient is φ = 45497808432.

The previous prime is 69921012113. The next prime is 69921012127. The reversal of 69921012123 is 32121012996.

It is not a de Polignac number, because 69921012123 - 2¹⁶ = 69920946587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69921012127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69961 + ... + 380442.

It is an arithmetic number, because the mean of its divisors is an integer number (4309465472).

Almost surely, 2^69921012123 is an apocalyptic number.

69921012123 is a deficient number, since it is larger than the sum of its proper divisors (33506159205).

69921012123 is a wasteful number, since it uses less digits than its factorization.

69921012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450823 (or 450820 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 69921012123 in words is "sixty-nine billion, nine hundred twenty-one million, twelve thousand, one hundred twenty-three".