40646172312 has 48 divisors (see below), whose sum is σ = 110096826840. Its totient is φ = 13547069568.

The previous prime is 40646172197. The next prime is 40646172317. The reversal of 40646172312 is 21327164604.

40646172312 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 617 + 2 + 31 + 2 = 666.

It is a super-2 number, since 2×40646172312² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40646172317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 654063 + ... + 713505.

Almost surely, 2^40646172312 is an apocalyptic number.

It is an amenable number.

40646172312 is an abundant number, since it is smaller than the sum of its proper divisors (69450654528).

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

40646172312 is a wasteful number, since it uses less digits than its factorization.

40646172312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68952 (or 68945 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 40646172312 in words is "forty billion, six hundred forty-six million, one hundred seventy-two thousand, three hundred twelve".