69916555980 has 144 divisors (see below), whose sum is σ = 221420122560. Its totient is φ = 17824198656.

The previous prime is 69916555913. The next prime is 69916556023. The reversal of 69916555980 is 8955561996.

69916555980 is a `hidden beast` number, since 69 + 9 + 16 + 5 + 559 + 8 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10798024 + ... + 10804496.

It is an arithmetic number, because the mean of its divisors is an integer number (1537639740).

Almost surely, 2^69916555980 is an apocalyptic number.

69916555980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69916555980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110710061280).

69916555980 is an abundant number, since it is smaller than the sum of its proper divisors (151503566580).

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

69916555980 is a wasteful number, since it uses less digits than its factorization.

69916555980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9120 (or 9115 counting only the distinct ones).

The product of its (nonzero) digits is 26244000, while the sum is 63.

The spelling of 69916555980 in words is "sixty-nine billion, nine hundred sixteen million, five hundred fifty-five thousand, nine hundred eighty".