80897638356 has 144 divisors (see below), whose sum is σ = 216911036160. Its totient is φ = 26351464320.

The previous prime is 80897638343. The next prime is 80897638357. The reversal of 80897638356 is 65383679808.

It is a junction number, because it is equal to n+sod(n) for n = 80897638293 and 80897638302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80897638357) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48469890 + ... + 48471558.

It is an arithmetic number, because the mean of its divisors is an integer number (1506326640).

Almost surely, 2^80897638356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80897638356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108455518080).

80897638356 is an abundant number, since it is smaller than the sum of its proper divisors (136013397804).

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

80897638356 is a wasteful number, since it uses less digits than its factorization.

80897638356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796 (or 2782 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 80897638356 in words is "eighty billion, eight hundred ninety-seven million, six hundred thirty-eight thousand, three hundred fifty-six".