203445500550100 has 72 divisors (see below), whose sum is σ = 467961335432640. Its totient is φ = 76506802091520.

The previous prime is 203445500550077. The next prime is 203445500550121. The reversal of 203445500550100 is 1055005544302.

It is a super-2 number, since 2×203445500550100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

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, 64430440 + ... + 67514239.

It is an arithmetic number, because the mean of its divisors is an integer number (6499462992120).

Almost surely, 2^{203445500550100} is an apocalyptic number.

203445500550100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203445500550100 is an abundant number, since it is smaller than the sum of its proper divisors (264515834882540).

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

203445500550100 is a wasteful number, since it uses less digits than its factorization.

203445500550100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131945617 (or 131945610 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 203445500550100 in words is "two hundred three trillion, four hundred forty-five billion, five hundred million, five hundred fifty thousand, one hundred".