971639551207 has 32 divisors (see below), whose sum is σ = 1085134487360. Its totient is φ = 864162432000.

The previous prime is 971639551177. The next prime is 971639551229. The reversal of 971639551207 is 702155936179.

It is a cyclic number.

It is not a de Polignac number, because 971639551207 - 2¹⁵ = 971639518439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971639551237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118013563 + ... + 118021795.

It is an arithmetic number, because the mean of its divisors is an integer number (33910452730).

Almost surely, 2^971639551207 is an apocalyptic number.

971639551207 is a deficient number, since it is larger than the sum of its proper divisors (113494936153).

971639551207 is a wasteful number, since it uses less digits than its factorization.

971639551207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10643.

The product of its (nonzero) digits is 3572100, while the sum is 55.

The spelling of 971639551207 in words is "nine hundred seventy-one billion, six hundred thirty-nine million, five hundred fifty-one thousand, two hundred seven".