69947749048857 has 16 divisors (see below), whose sum is σ = 94793154218880. Its totient is φ = 45867097584000.

The previous prime is 69947749048831. The next prime is 69947749048897. The reversal of 69947749048857 is 75884094774996.

It is not a de Polignac number, because 69947749048857 - 2³¹ = 69945601565209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69947749048897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31528869 + ... + 33674397.

It is an arithmetic number, because the mean of its divisors is an integer number (5924572138680).

Almost surely, 2^{69947749048857} is an apocalyptic number.

It is an amenable number.

69947749048857 is a deficient number, since it is larger than the sum of its proper divisors (24845405170023).

69947749048857 is a wasteful number, since it uses less digits than its factorization.

69947749048857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323744.

The product of its (nonzero) digits is 30725775360, while the sum is 87.

The spelling of 69947749048857 in words is "sixty-nine trillion, nine hundred forty-seven billion, seven hundred forty-nine million, forty-eight thousand, eight hundred fifty-seven".