40750457891 has 16 divisors (see below), whose sum is σ = 47952360288. Its totient is φ = 34140691200.

The previous prime is 40750457837. The next prime is 40750457921. The reversal of 40750457891 is 19875405704.

It is a happy number.

40750457891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-40750457891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40750457491) 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, 142700 + ... + 319161.

It is an arithmetic number, because the mean of its divisors is an integer number (2997022518).

Almost surely, 2^40750457891 is an apocalyptic number.

40750457891 is a deficient number, since it is larger than the sum of its proper divisors (7201902397).

40750457891 is a wasteful number, since it uses less digits than its factorization.

40750457891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462502.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 40750457891 in words is "forty billion, seven hundred fifty million, four hundred fifty-seven thousand, eight hundred ninety-one".