1421554715504 has 160 divisors (see below), whose sum is σ = 3515679839232. Its totient is φ = 540792576000.

The previous prime is 1421554715479. The next prime is 1421554715507. The reversal of 1421554715504 is 4055174551241.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421554715507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10226789 + ... + 10364859.

Almost surely, 2^{1421554715504} is an apocalyptic number.

1421554715504 is a gapful number since it is divisible by the number (14) 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 1421554715504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1757839919616).

1421554715504 is an abundant number, since it is smaller than the sum of its proper divisors (2094125123728).

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

1421554715504 is a wasteful number, since it uses less digits than its factorization.

1421554715504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138295 (or 138289 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 44.

The spelling of 1421554715504 in words is "one trillion, four hundred twenty-one billion, five hundred fifty-four million, seven hundred fifteen thousand, five hundred four".