40061972571 has 4 divisors (see below), whose sum is σ = 53415963432. Its totient is φ = 26707981712.

The previous prime is 40061972567. The next prime is 40061972611. The reversal of 40061972571 is 17527916004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40061972571 - 2² = 40061972567 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40061972971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6676995426 + ... + 6676995431.

It is an arithmetic number, because the mean of its divisors is an integer number (13353990858).

Almost surely, 2^40061972571 is an apocalyptic number.

40061972571 is a deficient number, since it is larger than the sum of its proper divisors (13353990861).

40061972571 is a wasteful number, since it uses less digits than its factorization.

40061972571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13353990860.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 40061972571 in words is "forty billion, sixty-one million, nine hundred seventy-two thousand, five hundred seventy-one".