71772412252 has 12 divisors (see below), whose sum is σ = 125943963040. Its totient is φ = 35788422816.

The previous prime is 71772412189. The next prime is 71772412273. The reversal of 71772412252 is 25221427717.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24444177 + ... + 24447112.

Almost surely, 2^71772412252 is an apocalyptic number.

It is an amenable number.

71772412252 is a deficient number, since it is larger than the sum of its proper divisors (54171550788).

71772412252 is a wasteful number, since it uses less digits than its factorization.

71772412252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48891660 (or 48891658 counting only the distinct ones).

The product of its digits is 109760, while the sum is 40.

Adding to 71772412252 its reverse (25221427717), we get a palindrome (96993839969).

The spelling of 71772412252 in words is "seventy-one billion, seven hundred seventy-two million, four hundred twelve thousand, two hundred fifty-two".