40123452772 has 24 divisors (see below), whose sum is σ = 75663629496. Its totient is φ = 18507164928.

The previous prime is 40123452757. The next prime is 40123452839. The reversal of 40123452772 is 27725432104.

40123452772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33802596 + 40089650176 = 5814^2 + 200224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150553 + ... + 320800.

It is an arithmetic number, because the mean of its divisors is an integer number (3152651229).

Almost surely, 2^40123452772 is an apocalyptic number.

It is an amenable number.

40123452772 is a deficient number, since it is larger than the sum of its proper divisors (35540176724).

40123452772 is a wasteful number, since it uses less digits than its factorization.

40123452772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473007 (or 473005 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 37.

Adding to 40123452772 its reverse (27725432104), we get a palindrome (67848884876).

The spelling of 40123452772 in words is "forty billion, one hundred twenty-three million, four hundred fifty-two thousand, seven hundred seventy-two".