80886435840 has 416 divisors, whose sum is σ = 328656994560. Its totient is φ = 18487443456.

The previous prime is 80886435809. The next prime is 80886435841. The reversal of 80886435840 is 4853468808.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (80886435841) 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, 3860272 + ... + 3881168.

Almost surely, 2^80886435840 is an apocalyptic number.

80886435840 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 80886435840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164328497280).

80886435840 is an abundant number, since it is smaller than the sum of its proper divisors (247770558720).

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

80886435840 is a wasteful number, since it uses less digits than its factorization.

80886435840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20942 (or 20914 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 54.

The spelling of 80886435840 in words is "eighty billion, eight hundred eighty-six million, four hundred thirty-five thousand, eight hundred forty".