40278790314840 has 768 divisors, whose sum is σ = 164482710912000. Its totient is φ = 7655676456960.

The previous prime is 40278790314839. The next prime is 40278790314881. The reversal of 40278790314840 is 4841309787204.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 96525366 + ... + 96941754.

It is an arithmetic number, because the mean of its divisors is an integer number (214170196500).

Almost surely, 2^{40278790314840} is an apocalyptic number.

40278790314840 is a gapful number since it is divisible by the number (40) 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 40278790314840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82241355456000).

40278790314840 is an abundant number, since it is smaller than the sum of its proper divisors (124203920597160).

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

40278790314840 is a wasteful number, since it uses less digits than its factorization.

40278790314840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416488 (or 416465 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 57.

The spelling of 40278790314840 in words is "forty trillion, two hundred seventy-eight billion, seven hundred ninety million, three hundred fourteen thousand, eight hundred forty".