40370040040 has 32 divisors (see below), whose sum is σ = 99090099360. Its totient is φ = 14680014400.

The previous prime is 40370039989. The next prime is 40370040049. The reversal of 40370040040 is 4004007304.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 40370039993 and 40370040020.

It is not an unprimeable number, because it can be changed into a prime (40370040049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45874606 + ... + 45875485.

It is an arithmetic number, because the mean of its divisors is an integer number (3096565605).

Almost surely, 2^40370040040 is an apocalyptic number.

40370040040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40370040040 is an abundant number, since it is smaller than the sum of its proper divisors (58720059320).

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

40370040040 is a wasteful number, since it uses less digits than its factorization.

40370040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91750113 (or 91750109 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

Adding to 40370040040 its reverse (4004007304), we get a palindrome (44374047344).

The spelling of 40370040040 in words is "forty billion, three hundred seventy million, forty thousand, forty".