203460534990 has 192 divisors, whose sum is σ = 579890534400. Its totient is φ = 50747995584.

The previous prime is 203460534943. The next prime is 203460535021. The reversal of 203460534990 is 99435064302.

203460534990 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 605 + 34 + 9 + 9 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7686919 + ... + 7713341.

It is an arithmetic number, because the mean of its divisors is an integer number (3020263200).

Almost surely, 2^203460534990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203460534990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289945267200).

203460534990 is an abundant number, since it is smaller than the sum of its proper divisors (376429999410).

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

203460534990 is a wasteful number, since it uses less digits than its factorization.

203460534990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26556 (or 26531 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

It can be divided in two parts, 2034605 and 34990, that added together give a triangular number (2069595 = T₂₀₃₄).

The spelling of 203460534990 in words is "two hundred three billion, four hundred sixty million, five hundred thirty-four thousand, nine hundred ninety".