40203642450 has 24 divisors (see below), whose sum is σ = 99705033648. Its totient is φ = 10720971280.

The previous prime is 40203642443. The next prime is 40203642467. The reversal of 40203642450 is 5424630204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134011992 + ... + 134012291.

It is an arithmetic number, because the mean of its divisors is an integer number (4154376402).

Almost surely, 2^40203642450 is an apocalyptic number.

40203642450 is an abundant number, since it is smaller than the sum of its proper divisors (59501391198).

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

40203642450 is a wasteful number, since it uses less digits than its factorization.

40203642450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268024298 (or 268024293 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The spelling of 40203642450 in words is "forty billion, two hundred three million, six hundred forty-two thousand, four hundred fifty".