40647460128 has 48 divisors (see below), whose sum is σ = 116399547936. Its totient is φ = 12317411840.

The previous prime is 40647460039. The next prime is 40647460129. The reversal of 40647460128 is 82106474604.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40647460128.

It is not an unprimeable number, because it can be changed into a prime (40647460129) 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, 19244901 + ... + 19247012.

It is an arithmetic number, because the mean of its divisors is an integer number (2424990582).

Almost surely, 2^40647460128 is an apocalyptic number.

40647460128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40647460128 is an abundant number, since it is smaller than the sum of its proper divisors (75752087808).

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

40647460128 is a wasteful number, since it uses less digits than its factorization.

40647460128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38491937 (or 38491929 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 40647460128 in words is "forty billion, six hundred forty-seven million, four hundred sixty thousand, one hundred twenty-eight".