40287136032 has 144 divisors (see below), whose sum is σ = 134595796608. Its totient is φ = 11269117440.

The previous prime is 40287135997. The next prime is 40287136049. The reversal of 40287136032 is 23063178204.

It is a happy number.

40287136032 is a `hidden beast` number, since 40 + 2 + 8 + 7 + 1 + 3 + 603 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447928 + ... + 530295.

It is an arithmetic number, because the mean of its divisors is an integer number (934693032).

Almost surely, 2^40287136032 is an apocalyptic number.

It is an amenable number.

40287136032 is an abundant number, since it is smaller than the sum of its proper divisors (94308660576).

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

40287136032 is a wasteful number, since it uses less digits than its factorization.

40287136032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978263 (or 978252 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 40287136032 in words is "forty billion, two hundred eighty-seven million, one hundred thirty-six thousand, thirty-two".