40259739648 has 112 divisors (see below), whose sum is σ = 108206438400. Its totient is φ = 13313212416.

The previous prime is 40259739623. The next prime is 40259739661. The reversal of 40259739648 is 84693795204.

It is a congruent number.

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, 3114703 + ... + 3127601.

Almost surely, 2^40259739648 is an apocalyptic number.

40259739648 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40259739648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54103219200).

40259739648 is an abundant number, since it is smaller than the sum of its proper divisors (67946698752).

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

40259739648 is a wasteful number, since it uses less digits than its factorization.

40259739648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13055 (or 13031 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 40259739648 in words is "forty billion, two hundred fifty-nine million, seven hundred thirty-nine thousand, six hundred forty-eight".