40145728984 has 16 divisors (see below), whose sum is σ = 75298897800. Its totient is φ = 20066022912.

The previous prime is 40145728967. The next prime is 40145728993. The reversal of 40145728984 is 48982754104.

It is a super-2 number, since 2×40145728984² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830217 + ... + 877240.

Almost surely, 2^40145728984 is an apocalyptic number.

It is an amenable number.

40145728984 is a deficient number, since it is larger than the sum of its proper divisors (35153168816).

40145728984 is a wasteful number, since it uses less digits than its factorization.

40145728984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710402 (or 1710398 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

It can be divided in two parts, 40145 and 728984, that added together give a square (769129 = 877²).

The spelling of 40145728984 in words is "forty billion, one hundred forty-five million, seven hundred twenty-eight thousand, nine hundred eighty-four".