621004768001280 has 1296 divisors, whose sum is σ = 2405035487697024. Its totient is φ = 152718211399680.

The previous prime is 621004768001249. The next prime is 621004768001297. The reversal of 621004768001280 is 82100867400126.

621004768001280 is a `hidden beast` number, since 6 + 2 + 10 + 0 + 476 + 80 + 0 + 12 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1296).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 157976280915 + ... + 157976284845.

Almost surely, 2^{621004768001280} is an apocalyptic number.

621004768001280 is a gapful number since it is divisible by the number (60) 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 621004768001280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202517743848512).

621004768001280 is an abundant number, since it is smaller than the sum of its proper divisors (1784030719695744).

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

621004768001280 is an equidigital number, since it uses as much as digits as its factorization.

621004768001280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436 (or 5401 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 621004768001280 in words is "six hundred twenty-one trillion, four billion, seven hundred sixty-eight million, one thousand, two hundred eighty".