40297499232 has 48 divisors (see below), whose sum is σ = 110380112640. Its totient is φ = 12848477312.

The previous prime is 40297499219. The next prime is 40297499239. The reversal of 40297499232 is 23299479204.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40297499239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9123132 + ... + 9127547.

It is an arithmetic number, because the mean of its divisors is an integer number (2299585680).

Almost surely, 2^40297499232 is an apocalyptic number.

It is an amenable number.

40297499232 is an abundant number, since it is smaller than the sum of its proper divisors (70082613408).

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

40297499232 is a wasteful number, since it uses less digits than its factorization.

40297499232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18250715 (or 18250707 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 40297499232 in words is "forty billion, two hundred ninety-seven million, four hundred ninety-nine thousand, two hundred thirty-two".