40689223536 has 40 divisors (see below), whose sum is σ = 113199508240. Its totient is φ = 12519760896.

The previous prime is 40689223457. The next prime is 40689223537. The reversal of 40689223536 is 63532298604.

It is a super-2 number, since 2×40689223536² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40689223537) 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, 32602921 + ... + 32604168.

It is an arithmetic number, because the mean of its divisors is an integer number (2829987706).

Almost surely, 2^40689223536 is an apocalyptic number.

It is an amenable number.

40689223536 is an abundant number, since it is smaller than the sum of its proper divisors (72510284704).

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

40689223536 is a wasteful number, since it uses less digits than its factorization.

40689223536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65207113 (or 65207107 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 40689223536 in words is "forty billion, six hundred eighty-nine million, two hundred twenty-three thousand, five hundred thirty-six".