80121027900 has 72 divisors (see below), whose sum is σ = 233586549504. Its totient is φ = 21202500800.

The previous prime is 80121027881. The next prime is 80121027907. The reversal of 80121027900 is 972012108.

It is a super-2 number, since 2×80121027900² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80121027907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 980052 + ... + 1058651.

It is an arithmetic number, because the mean of its divisors is an integer number (3244257632).

Almost surely, 2^80121027900 is an apocalyptic number.

It is an amenable number.

80121027900 is an abundant number, since it is smaller than the sum of its proper divisors (153465521604).

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

80121027900 is a wasteful number, since it uses less digits than its factorization.

80121027900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038851 (or 2038844 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The spelling of 80121027900 in words is "eighty billion, one hundred twenty-one million, twenty-seven thousand, nine hundred".