69997156992 has 448 divisors, whose sum is σ = 243931368000. Its totient is φ = 19999187712.

The previous prime is 69997156987. The next prime is 69997157089. The reversal of 69997156992 is 29965179996.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (72).

Its product of digits (148803480) is a multiple of the sum of its prime divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 69997156992.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 9999593853 + ... + 9999593859.

Almost surely, 2^69997156992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69997156992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121965684000).

69997156992 is an abundant number, since it is smaller than the sum of its proper divisors (173934211008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69997156992 is an frugal number, since it uses more digits than its factorization.

69997156992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 12 counting only the distinct ones).

The product of its digits is 148803480, while the sum is 72.

The spelling of 69997156992 in words is "sixty-nine billion, nine hundred ninety-seven million, one hundred fifty-six thousand, nine hundred ninety-two".