71742262251 has 8 divisors (see below), whose sum is σ = 104352381504. Its totient is φ = 43480158920.

The previous prime is 71742262231. The next prime is 71742262253. The reversal of 71742262251 is 15226224717.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-71742262251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71742262253) 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 7 ways as a sum of consecutive naturals, for example, 1087003941 + ... + 1087004006.

It is an arithmetic number, because the mean of its divisors is an integer number (13044047688).

Almost surely, 2^71742262251 is an apocalyptic number.

71742262251 is a deficient number, since it is larger than the sum of its proper divisors (32610119253).

71742262251 is a wasteful number, since it uses less digits than its factorization.

71742262251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174007961.

The product of its digits is 94080, while the sum is 39.

Adding to 71742262251 its reverse (15226224717), we get a palindrome (86968486968).

The spelling of 71742262251 in words is "seventy-one billion, seven hundred forty-two million, two hundred sixty-two thousand, two hundred fifty-one".