80228776904640 has 2016 divisors, whose sum is σ = 373262127353856. Its totient is φ = 15417391841280.

The previous prime is 80228776904621. The next prime is 80228776904641. The reversal of 80228776904640 is 4640967782208.

80228776904640 is a `hidden beast` number, since 8 + 0 + 2 + 2 + 87 + 7 + 6 + 90 + 464 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a super-2 number, since 2×80228776904640² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80228776904641) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1795487739 + ... + 1795532421.

Almost surely, 2^{80228776904640} is an apocalyptic number.

80228776904640 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 80228776904640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186631063676928).

80228776904640 is an abundant number, since it is smaller than the sum of its proper divisors (293033350449216).

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

80228776904640 is a wasteful number, since it uses less digits than its factorization.

80228776904640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44787 (or 44761 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 80228776904640 in words is "eighty trillion, two hundred twenty-eight billion, seven hundred seventy-six million, nine hundred four thousand, six hundred forty".