40325531971440 has 80 divisors (see below), whose sum is σ = 125363282941728. Its totient is φ = 10723012067328.

The previous prime is 40325531971421. The next prime is 40325531971447. The reversal of 40325531971440 is 4417913552304.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×40325531971440² (a number of 28 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40325531971440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40325531971447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237908269 + ... + 238077708.

Almost surely, 2^{40325531971440} is an apocalyptic number.

40325531971440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40325531971440 is an abundant number, since it is smaller than the sum of its proper divisors (85037750970288).

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

40325531971440 is a wasteful number, since it uses less digits than its factorization.

40325531971440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475986346 (or 475986340 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 40325531971440 in words is "forty trillion, three hundred twenty-five billion, five hundred thirty-one million, nine hundred seventy-one thousand, four hundred forty".