80158040640 has 784 divisors, whose sum is σ = 299911715136. Its totient is φ = 20379340800.

The previous prime is 80158040639. The next prime is 80158040659. The reversal of 80158040640 is 4604085108.

80158040640 is a `hidden beast` number, since 8 + 0 + 1 + 5 + 8 + 0 + 4 + 0 + 640 = 666.

It is a super-2 number, since 2×80158040640² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80158040595 and 80158040604.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 611893375 + ... + 611893505.

Almost surely, 2^80158040640 is an apocalyptic number.

80158040640 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 80158040640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149955857568).

80158040640 is an abundant number, since it is smaller than the sum of its proper divisors (219753674496).

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

80158040640 is a wasteful number, since it uses less digits than its factorization.

80158040640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 80158040640 in words is "eighty billion, one hundred fifty-eight million, forty thousand, six hundred forty".