80947855464 has 128 divisors (see below), whose sum is σ = 242654945280. Its totient is φ = 22014892800.

The previous prime is 80947855409. The next prime is 80947855519. The reversal of 80947855464 is 46455874908.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80947855409) and next prime (80947855519).

It is a junction number, because it is equal to n+sod(n) for n = 80947855398 and 80947855407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190287 + ... + 445089.

It is an arithmetic number, because the mean of its divisors is an integer number (1895741760).

Almost surely, 2^80947855464 is an apocalyptic number.

80947855464 is a gapful number since it is divisible by the number (84) 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 80947855464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121327472640).

80947855464 is an abundant number, since it is smaller than the sum of its proper divisors (161707089816).

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

80947855464 is a wasteful number, since it uses less digits than its factorization.

80947855464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254911 (or 254907 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 80947855464 in words is "eighty billion, nine hundred forty-seven million, eight hundred fifty-five thousand, four hundred sixty-four".