40561365648 has 40 divisors (see below), whose sum is σ = 104942613600. Its totient is φ = 13499928064.

The previous prime is 40561365601. The next prime is 40561365703. The reversal of 40561365648 is 84656316504.

It is a super-3 number, since 3×40561365648³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 40561365597 and 40561365606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609513 + ... + 672776.

It is an arithmetic number, because the mean of its divisors is an integer number (2623565340).

Almost surely, 2^40561365648 is an apocalyptic number.

40561365648 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40561365648 is an abundant number, since it is smaller than the sum of its proper divisors (64381247952).

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

40561365648 is a wasteful number, since it uses less digits than its factorization.

40561365648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282959 (or 1282953 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 40561365648 in words is "forty billion, five hundred sixty-one million, three hundred sixty-five thousand, six hundred forty-eight".