40618397040 has 80 divisors (see below), whose sum is σ = 135602966688. Its totient is φ = 9998373888.

The previous prime is 40618396999. The next prime is 40618397081. The reversal of 40618397040 is 4079381604.

It is an interprime number because it is at equal distance from previous prime (40618396999) and next prime (40618397081).

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

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40618396983 and 40618397001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6506239 + ... + 6512478.

Almost surely, 2^40618397040 is an apocalyptic number.

40618397040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40618397040 is an abundant number, since it is smaller than the sum of its proper divisors (94984569648).

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

40618397040 is a wasteful number, since it uses less digits than its factorization.

40618397040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13018746 (or 13018740 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 40618397040 in words is "forty billion, six hundred eighteen million, three hundred ninety-seven thousand, forty".