80147720640 has 224 divisors, whose sum is σ = 280418535936. Its totient is φ = 19269734400.

The previous prime is 80147720623. The next prime is 80147720641. The reversal of 80147720640 is 4602774108.

It is a super-3 number, since 3×80147720640³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80147720641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461965 + ... + 611315.

It is an arithmetic number, because the mean of its divisors is an integer number (1251868464).

Almost surely, 2^80147720640 is an apocalyptic number.

80147720640 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 80147720640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140209267968).

80147720640 is an abundant number, since it is smaller than the sum of its proper divisors (200270815296).

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

80147720640 is a wasteful number, since it uses less digits than its factorization.

80147720640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149427 (or 149417 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 80147720640 in words is "eighty billion, one hundred forty-seven million, seven hundred twenty thousand, six hundred forty".