40485969788 has 48 divisors (see below), whose sum is σ = 80677416960. Its totient is φ = 17597025600.

The previous prime is 40485969787. The next prime is 40485969841. The reversal of 40485969788 is 88796958404.

It is a happy number.

It is a super-2 number, since 2×40485969788² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40485969787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6148658 + ... + 6155238.

It is an arithmetic number, because the mean of its divisors is an integer number (1680779520).

Almost surely, 2^40485969788 is an apocalyptic number.

It is an amenable number.

40485969788 is a deficient number, since it is larger than the sum of its proper divisors (40191447172).

40485969788 is a wasteful number, since it uses less digits than its factorization.

40485969788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12698 (or 12696 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 68.

The spelling of 40485969788 in words is "forty billion, four hundred eighty-five million, nine hundred sixty-nine thousand, seven hundred eighty-eight".