1491100876800 has 1080 divisors, whose sum is σ = 5643754526592. Its totient is φ = 390168576000.

The previous prime is 1491100876781. The next prime is 1491100876807. The reversal of 1491100876800 is 86780011941.

It is a happy number.

1491100876800 is a `hidden beast` number, since 1 + 491 + 1 + 0 + 0 + 87 + 6 + 80 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1080).

It is a super-3 number, since 3×1491100876800³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491100876807) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7066828695 + ... + 7066828905.

Almost surely, 2^{1491100876800} is an apocalyptic number.

1491100876800 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 1491100876800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2821877263296).

1491100876800 is an abundant number, since it is smaller than the sum of its proper divisors (4152653649792).

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

1491100876800 is an frugal number, since it uses more digits than its factorization.

1491100876800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 1491100876800 in words is "one trillion, four hundred ninety-one billion, one hundred million, eight hundred seventy-six thousand, eight hundred".