801426780000 has 1440 divisors, whose sum is σ = 3620950324992. Its totient is φ = 163238400000.

The previous prime is 801426779927. The next prime is 801426780031. The reversal of 801426780000 is 87624108.

It is a tau number, because it is divible by the number of its divisors (1440).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 734579455 + ... + 734580545.

Almost surely, 2^801426780000 is an apocalyptic number.

801426780000 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 801426780000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1810475162496).

801426780000 is an abundant number, since it is smaller than the sum of its proper divisors (2819523544992).

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

801426780000 is a wasteful number, since it uses less digits than its factorization.

801426780000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 801426780000 in words is "eight hundred one billion, four hundred twenty-six million, seven hundred eighty thousand".