40145461660 has 12 divisors (see below), whose sum is σ = 84305469528. Its totient is φ = 16058184656.

The previous prime is 40145461651. The next prime is 40145461729. The reversal of 40145461660 is 6616454104.

It is a super-2 number, since 2×40145461660² (a number of 22 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1003636522 + ... + 1003636561.

It is an arithmetic number, because the mean of its divisors is an integer number (7025455794).

Almost surely, 2^40145461660 is an apocalyptic number.

It is an amenable number.

40145461660 is an abundant number, since it is smaller than the sum of its proper divisors (44160007868).

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

40145461660 is a wasteful number, since it uses less digits than its factorization.

40145461660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007273092 (or 2007273090 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 40145461660 in words is "forty billion, one hundred forty-five million, four hundred sixty-one thousand, six hundred sixty".