40970329891 has 2 divisors, whose sum is σ = 40970329892. Its totient is φ = 40970329890.

The previous prime is 40970329877. The next prime is 40970329927. The reversal of 40970329891 is 19892307904.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40970329891 - 2¹¹ = 40970327843 is a prime.

It is not a weakly prime, because it can be changed into another prime (40970359891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20485164945 + 20485164946.

It is an arithmetic number, because the mean of its divisors is an integer number (20485164946).

Almost surely, 2^40970329891 is an apocalyptic number.

40970329891 is a deficient number, since it is larger than the sum of its proper divisors (1).

40970329891 is an equidigital number, since it uses as much as digits as its factorization.

40970329891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 40970329891 in words is "forty billion, nine hundred seventy million, three hundred twenty-nine thousand, eight hundred ninety-one".