240406233157540 has 48 divisors (see below), whose sum is σ = 511122601382400. Its totient is φ = 94972439872512.

The previous prime is 240406233157507. The next prime is 240406233157543. The reversal of 240406233157540 is 45751332604042.

It is not an unprimeable number, because it can be changed into a prime (240406233157543) 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, 128424330 + ... + 130282849.

It is an arithmetic number, because the mean of its divisors is an integer number (10648387528800).

Almost surely, 2^{240406233157540} is an apocalyptic number.

240406233157540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240406233157540 is an abundant number, since it is smaller than the sum of its proper divisors (270716368224860).

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

240406233157540 is a wasteful number, since it uses less digits than its factorization.

240406233157540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258707764 (or 258707762 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 46.

The spelling of 240406233157540 in words is "two hundred forty trillion, four hundred six billion, two hundred thirty-three million, one hundred fifty-seven thousand, five hundred forty".