40494165940 has 24 divisors (see below), whose sum is σ = 85482980352. Its totient is φ = 16112860320.

The previous prime is 40494165931. The next prime is 40494165949. The reversal of 40494165940 is 4956149404.

It is an interprime number because it is at equal distance from previous prime (40494165931) and next prime (40494165949).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40494165949) 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, 5296464 + ... + 5304103.

It is an arithmetic number, because the mean of its divisors is an integer number (3561790848).

Almost surely, 2^40494165940 is an apocalyptic number.

It is an amenable number.

40494165940 is an abundant number, since it is smaller than the sum of its proper divisors (44988814412).

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

40494165940 is a wasteful number, since it uses less digits than its factorization.

40494165940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600767 (or 10600765 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 40494165940 in words is "forty billion, four hundred ninety-four million, one hundred sixty-five thousand, nine hundred forty".