80061611520 has 640 divisors, whose sum is σ = 298975007232. Its totient is φ = 18061721600.

The previous prime is 80061611489. The next prime is 80061611573. The reversal of 80061611520 is 2511616008.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153668860 + ... + 153669380.

Almost surely, 2^80061611520 is an apocalyptic number.

80061611520 is a gapful number since it is divisible by the number (80) 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 80061611520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149487503616).

80061611520 is an abundant number, since it is smaller than the sum of its proper divisors (218913395712).

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

80061611520 is a wasteful number, since it uses less digits than its factorization.

80061611520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 80061611520 in words is "eighty billion, sixty-one million, six hundred eleven thousand, five hundred twenty".