21377062080 has 896 divisors, whose sum is σ = 88642667520. Its totient is φ = 4792320000.

The previous prime is 21377062079. The next prime is 21377062087. The reversal of 21377062080 is 8026077312.

21377062080 is a `hidden beast` number, since 21 + 3 + 7 + 7 + 0 + 620 + 8 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (21377062087) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 163183615 + ... + 163183745.

Almost surely, 2^21377062080 is an apocalyptic number.

21377062080 is a gapful number since it is divisible by the number (20) 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 21377062080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44321333760).

21377062080 is an abundant number, since it is smaller than the sum of its proper divisors (67265605440).

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

21377062080 is a wasteful number, since it uses less digits than its factorization.

21377062080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 21377062080 in words is "twenty-one billion, three hundred seventy-seven million, sixty-two thousand, eighty".