1000500554400 has 144 divisors (see below), whose sum is σ = 3257144654400. Its totient is φ = 266757928960.

The previous prime is 1000500554381. The next prime is 1000500554419. The reversal of 1000500554400 is 44550050001.

It is an interprime number because it is at equal distance from previous prime (1000500554381) and next prime (1000500554419).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16960156 + ... + 17019044.

It is an arithmetic number, because the mean of its divisors is an integer number (22619060100).

Almost surely, 2^{1000500554400} is an apocalyptic number.

1000500554400 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 1000500554400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628572327200).

1000500554400 is an abundant number, since it is smaller than the sum of its proper divisors (2256644100000).

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

1000500554400 is a wasteful number, since it uses less digits than its factorization.

1000500554400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65991 (or 65978 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The spelling of 1000500554400 in words is "one trillion, five hundred million, five hundred fifty-four thousand, four hundred".