40971261615 has 32 divisors (see below), whose sum is σ = 67379636160. Its totient is φ = 21243746304.

The previous prime is 40971261599. The next prime is 40971261649. The reversal of 40971261615 is 51616217904.

It is not a de Polignac number, because 40971261615 - 2⁴ = 40971261599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 679831 + ... + 737639.

It is an arithmetic number, because the mean of its divisors is an integer number (2105613630).

Almost surely, 2^40971261615 is an apocalyptic number.

40971261615 is a deficient number, since it is larger than the sum of its proper divisors (26408374545).

40971261615 is a wasteful number, since it uses less digits than its factorization.

40971261615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59131.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 40971261615 in words is "forty billion, nine hundred seventy-one million, two hundred sixty-one thousand, six hundred fifteen".