69480727991 has 8 divisors (see below), whose sum is σ = 72540507264. Its totient is φ = 66424188600.

The previous prime is 69480727973. The next prime is 69480728041. The reversal of 69480727991 is 19972708496.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-69480727991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69480727291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766085 + ... + 851966.

It is an arithmetic number, because the mean of its divisors is an integer number (9067563408).

Almost surely, 2^69480727991 is an apocalyptic number.

69480727991 is a deficient number, since it is larger than the sum of its proper divisors (3059779273).

69480727991 is a wasteful number, since it uses less digits than its factorization.

69480727991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619941.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 69480727991 in words is "sixty-nine billion, four hundred eighty million, seven hundred twenty-seven thousand, nine hundred ninety-one".