18874777429480 has 128 divisors (see below), whose sum is σ = 50215082976000. Its totient is φ = 6247416268800.

The previous prime is 18874777429433. The next prime is 18874777429513. The reversal of 18874777429480 is 8492477747881.

It is a junction number, because it is equal to n+sod(n) for n = 18874777429397 and 18874777429406.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66271380 + ... + 66555580.

It is an arithmetic number, because the mean of its divisors is an integer number (392305335750).

Almost surely, 2^{18874777429480} is an apocalyptic number.

18874777429480 is a gapful number since it is divisible by the number (10) 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 18874777429480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25107541488000).

18874777429480 is an abundant number, since it is smaller than the sum of its proper divisors (31340305546520).

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

18874777429480 is a wasteful number, since it uses less digits than its factorization.

18874777429480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292427 (or 292423 counting only the distinct ones).

The product of its (nonzero) digits is 1416167424, while the sum is 76.

The spelling of 18874777429480 in words is "eighteen trillion, eight hundred seventy-four billion, seven hundred seventy-seven million, four hundred twenty-nine thousand, four hundred eighty".