1421455106988 has 384 divisors, whose sum is σ = 4545278115840. Its totient is φ = 375222481920.

The previous prime is 1421455106927. The next prime is 1421455106993. The reversal of 1421455106988 is 8896015541241.

1421455106988 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 4 + 551 + 0 + 6 + 9 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 319641381 + ... + 319645827.

It is an arithmetic number, because the mean of its divisors is an integer number (11836661760).

Almost surely, 2^{1421455106988} is an apocalyptic number.

1421455106988 is a gapful number since it is divisible by the number (18) 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 1421455106988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2272639057920).

1421455106988 is an abundant number, since it is smaller than the sum of its proper divisors (3123823008852).

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

1421455106988 is a wasteful number, since it uses less digits than its factorization.

1421455106988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114 (or 5106 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 1421455106988 in words is "one trillion, four hundred twenty-one billion, four hundred fifty-five million, one hundred six thousand, nine hundred eighty-eight".