204335251254040 has 64 divisors (see below), whose sum is σ = 469632618748800. Its totient is φ = 79978670980608.

The previous prime is 204335251253977. The next prime is 204335251254041. The reversal of 204335251254040 is 40452152533402.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 204335251253984 and 204335251254002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204335251254041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1974255 + ... + 20311774.

It is an arithmetic number, because the mean of its divisors is an integer number (7338009667950).

Almost surely, 2^{204335251254040} is an apocalyptic number.

204335251254040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204335251254040 is an abundant number, since it is smaller than the sum of its proper divisors (265297367494760).

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

204335251254040 is a wasteful number, since it uses less digits than its factorization.

204335251254040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22290964 (or 22290960 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 40.

The spelling of 204335251254040 in words is "two hundred four trillion, three hundred thirty-five billion, two hundred fifty-one million, two hundred fifty-four thousand, forty".