40255321440 has 96 divisors (see below), whose sum is σ = 126852415200. Its totient is φ = 10730676224.

The previous prime is 40255321429. The next prime is 40255321453. The reversal of 40255321440 is 4412355204.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40255321398 and 40255321407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1376086 + ... + 1405034.

It is an arithmetic number, because the mean of its divisors is an integer number (1321379325).

Almost surely, 2^40255321440 is an apocalyptic number.

40255321440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40255321440 is an abundant number, since it is smaller than the sum of its proper divisors (86597093760).

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

40255321440 is a wasteful number, since it uses less digits than its factorization.

40255321440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31864 (or 31856 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 40255321440 its reverse (4412355204), we get a palindrome (44667676644).

The spelling of 40255321440 in words is "forty billion, two hundred fifty-five million, three hundred twenty-one thousand, four hundred forty".