40185439396140 has 48 divisors (see below), whose sum is σ = 114060589640928. Its totient is φ = 10569321045504.

The previous prime is 40185439396117. The next prime is 40185439396163. The reversal of 40185439396140 is 4169393458104.

It is an interprime number because it is at equal distance from previous prime (40185439396117) and next prime (40185439396163).

It is a super-2 number, since 2×40185439396140² (a number of 28 digits) contains 22 as substring.

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, 4587374547 + ... + 4587383306.

It is an arithmetic number, because the mean of its divisors is an integer number (2376262284186).

Almost surely, 2^{40185439396140} is an apocalyptic number.

It is an amenable number.

40185439396140 is an abundant number, since it is smaller than the sum of its proper divisors (73875150244788).

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

40185439396140 is a wasteful number, since it uses less digits than its factorization.

40185439396140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174757938 (or 9174757936 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 40185439396140 in words is "forty trillion, one hundred eighty-five billion, four hundred thirty-nine million, three hundred ninety-six thousand, one hundred forty".