71973690351 has 8 divisors (see below), whose sum is σ = 96187578624. Its totient is φ = 47871131160.

The previous prime is 71973690323. The next prime is 71973690391. The reversal of 71973690351 is 15309637917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71973690351 - 2⁵ = 71973690319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71973690294 and 71973690303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71973690391) 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 7 ways as a sum of consecutive naturals, for example, 27830761 + ... + 27833346.

It is an arithmetic number, because the mean of its divisors is an integer number (12023447328).

Almost surely, 2^71973690351 is an apocalyptic number.

71973690351 is a deficient number, since it is larger than the sum of its proper divisors (24213888273).

71973690351 is a wasteful number, since it uses less digits than its factorization.

71973690351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55664541.

The product of its (nonzero) digits is 1071630, while the sum is 51.

The spelling of 71973690351 in words is "seventy-one billion, nine hundred seventy-three million, six hundred ninety thousand, three hundred fifty-one".