1553451656100 has 144 divisors (see below), whose sum is σ = 4611726163968. Its totient is φ = 403516229760.

The previous prime is 1553451656089. The next prime is 1553451656147. The reversal of 1553451656100 is 16561543551.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4570237 + ... + 4898363.

Almost surely, 2^{1553451656100} is an apocalyptic number.

1553451656100 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 1553451656100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2305863081984).

1553451656100 is an abundant number, since it is smaller than the sum of its proper divisors (3058274507868).

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

1553451656100 is a wasteful number, since it uses less digits than its factorization.

1553451656100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328554 (or 328547 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 1553451656100 in words is "one trillion, five hundred fifty-three billion, four hundred fifty-one million, six hundred fifty-six thousand, one hundred".