40036621240 has 64 divisors (see below), whose sum is σ = 112310530560. Its totient is φ = 12478945920.

The previous prime is 40036621223. The next prime is 40036621277. The reversal of 40036621240 is 4212663004.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 40036621199 and 40036621208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6496372 + ... + 6502531.

It is an arithmetic number, because the mean of its divisors is an integer number (1754852040).

Almost surely, 2^40036621240 is an apocalyptic number.

40036621240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40036621240 is an abundant number, since it is smaller than the sum of its proper divisors (72273909320).

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

40036621240 is a wasteful number, since it uses less digits than its factorization.

40036621240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12998932 (or 12998928 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 40036621240 in words is "forty billion, thirty-six million, six hundred twenty-one thousand, two hundred forty".