40547297648 has 80 divisors (see below), whose sum is σ = 92394836352. Its totient is φ = 16994400000.

The previous prime is 40547297591. The next prime is 40547297653. The reversal of 40547297648 is 84679274504.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40547297593 and 40547297602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2212523 + ... + 2230773.

Almost surely, 2^40547297648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40547297648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46197418176).

40547297648 is an abundant number, since it is smaller than the sum of its proper divisors (51847538704).

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

40547297648 is a wasteful number, since it uses less digits than its factorization.

40547297648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19254 (or 19248 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 40547297648 in words is "forty billion, five hundred forty-seven million, two hundred ninety-seven thousand, six hundred forty-eight".