1083554497620 has 480 divisors, whose sum is σ = 4118457353472. Its totient is φ = 232806223872.

The previous prime is 1083554497589. The next prime is 1083554497631. The reversal of 1083554497620 is 267944553801.

It is a happy number.

1083554497620 is a `hidden beast` number, since 1 + 0 + 8 + 3 + 5 + 5 + 4 + 4 + 9 + 7 + 620 = 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 174848362 + ... + 174854558.

It is a 1-persistent number, because it is pandigital, but 2⋅1083554497620 = 2167108995240 is not.

Almost surely, 2^{1083554497620} is an apocalyptic number.

1083554497620 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 1083554497620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059228676736).

1083554497620 is an abundant number, since it is smaller than the sum of its proper divisors (3034902855852).

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

1083554497620 is a wasteful number, since it uses less digits than its factorization.

1083554497620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7149 (or 7138 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 1083554497620 in words is "one trillion, eighty-three billion, five hundred fifty-four million, four hundred ninety-seven thousand, six hundred twenty".