20630123880 has 64 divisors (see below), whose sum is σ = 61900329600. Its totient is φ = 5500481280.

The previous prime is 20630123879. The next prime is 20630123897. The reversal of 20630123880 is 8832103602.

It is a super-2 number, since 2×20630123880² (a number of 21 digits) contains 22 as substring.

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, 1122606 + ... + 1140834.

It is an arithmetic number, because the mean of its divisors is an integer number (967192650).

Almost surely, 2^20630123880 is an apocalyptic number.

20630123880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20630123880 is an abundant number, since it is smaller than the sum of its proper divisors (41270205720).

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

20630123880 is a wasteful number, since it uses less digits than its factorization.

20630123880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27674 (or 27670 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

It can be divided in two parts, 206301 and 23880, that added together give a triangular number (230181 = T₆₇₈).

The spelling of 20630123880 in words is "twenty billion, six hundred thirty million, one hundred twenty-three thousand, eight hundred eighty".