746406172522 has 4 divisors (see below), whose sum is σ = 1119609258786. Its totient is φ = 373203086260.

The previous prime is 746406172427. The next prime is 746406172529. The reversal of 746406172522 is 225271604647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225271604647 = 220673 ⋅1020839.

It can be written as a sum of positive squares in only one way, i.e., 742335604921 + 4070567601 = 861589^2 + 63801^2 .

It is not an unprimeable number, because it can be changed into a prime (746406172529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186601543129 + ... + 186601543132.

Almost surely, 2^746406172522 is an apocalyptic number.

746406172522 is a deficient number, since it is larger than the sum of its proper divisors (373203086264).

746406172522 is a wasteful number, since it uses less digits than its factorization.

746406172522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373203086263.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 746406172522 in words is "seven hundred forty-six billion, four hundred six million, one hundred seventy-two thousand, five hundred twenty-two".