80220154638 has 64 divisors (see below), whose sum is σ = 183203677440. Its totient is φ = 23213267712.

The previous prime is 80220154633. The next prime is 80220154639. The reversal of 80220154638 is 83645102208.

It is a super-2 number, since 2×80220154638² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80220154596 and 80220154605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80220154631) 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, 5481 + ... + 400587.

It is an arithmetic number, because the mean of its divisors is an integer number (2862557460).

Almost surely, 2^80220154638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80220154638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91601838720).

80220154638 is an abundant number, since it is smaller than the sum of its proper divisors (102983522802).

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

80220154638 is a wasteful number, since it uses less digits than its factorization.

80220154638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395281.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 80220154638 in words is "eighty billion, two hundred twenty million, one hundred fifty-four thousand, six hundred thirty-eight".