16620377280 has 112 divisors (see below), whose sum is σ = 56828948064. Its totient is φ = 4091166720.

The previous prime is 16620377251. The next prime is 16620377297. The reversal of 16620377280 is 8277302661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653401 + ... + 678360.

It is an arithmetic number, because the mean of its divisors is an integer number (507401322).

Almost surely, 2^16620377280 is an apocalyptic number.

16620377280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16620377280 is an abundant number, since it is smaller than the sum of its proper divisors (40208570784).

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

16620377280 is a wasteful number, since it uses less digits than its factorization.

16620377280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331794 (or 1331784 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 16620377280 in words is "sixteen billion, six hundred twenty million, three hundred seventy-seven thousand, two hundred eighty".