1454991542550 has 1920 divisors, whose sum is σ = 5517246873600. Its totient is φ = 281652940800.

The previous prime is 1454991542507. The next prime is 1454991542591. The reversal of 1454991542550 is 552451994541.

1454991542550 is a `hidden beast` number, since 1 + 4 + 5 + 4 + 9 + 91 + 542 + 5 + 5 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 959 ways as a sum of consecutive naturals, for example, 12876031294 + ... + 12876031406.

It is an arithmetic number, because the mean of its divisors is an integer number (2873566080).

Almost surely, 2^{1454991542550} is an apocalyptic number.

1454991542550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1454991542550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2758623436800).

1454991542550 is an abundant number, since it is smaller than the sum of its proper divisors (4062255331050).

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

1454991542550 is a wasteful number, since it uses less digits than its factorization.

1454991542550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 54.

The spelling of 1454991542550 in words is "one trillion, four hundred fifty-four billion, nine hundred ninety-one million, five hundred forty-two thousand, five hundred fifty".