71928910135 has 8 divisors (see below), whose sum is σ = 87121372176. Its totient is φ = 57005341440.

The previous prime is 71928910133. The next prime is 71928910139. The reversal of 71928910135 is 53101982917.

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

It is not a de Polignac number, because 71928910135 - 2¹ = 71928910133 is a prime.

It is a super-2 number, since 2×71928910135² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71928910133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67222746 + ... + 67223815.

It is an arithmetic number, because the mean of its divisors is an integer number (10890171522).

Almost surely, 2^71928910135 is an apocalyptic number.

71928910135 is a deficient number, since it is larger than the sum of its proper divisors (15192462041).

71928910135 is a wasteful number, since it uses less digits than its factorization.

71928910135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134446673.

The product of its (nonzero) digits is 136080, while the sum is 46.

The spelling of 71928910135 in words is "seventy-one billion, nine hundred twenty-eight million, nine hundred ten thousand, one hundred thirty-five".