40712732437 has 4 divisors (see below), whose sum is σ = 43844481100. Its totient is φ = 37580983776.

The previous prime is 40712732383. The next prime is 40712732443. The reversal of 40712732437 is 73423721704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3852188356 + 36860544081 = 62066^2 + 191991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40712732437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40712732437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40712732447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1565874312 + ... + 1565874337.

It is an arithmetic number, because the mean of its divisors is an integer number (10961120275).

Almost surely, 2^40712732437 is an apocalyptic number.

It is an amenable number.

40712732437 is a deficient number, since it is larger than the sum of its proper divisors (3131748663).

40712732437 is a wasteful number, since it uses less digits than its factorization.

40712732437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131748662.

The product of its (nonzero) digits is 197568, while the sum is 40.

The spelling of 40712732437 in words is "forty billion, seven hundred twelve million, seven hundred thirty-two thousand, four hundred thirty-seven".