32421320746 has 4 divisors (see below), whose sum is σ = 48631981122. Its totient is φ = 16210660372.

The previous prime is 32421320741. The next prime is 32421320773. The reversal of 32421320746 is 64702312423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64702312423 = 7 ⋅9243187489.

It can be written as a sum of positive squares in only one way, i.e., 31981957225 + 439363521 = 178835^2 + 20961^2 .

It is a super-2 number, since 2×32421320746² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32421320741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8105330185 + ... + 8105330188.

Almost surely, 2^32421320746 is an apocalyptic number.

32421320746 is a deficient number, since it is larger than the sum of its proper divisors (16210660376).

32421320746 is a wasteful number, since it uses less digits than its factorization.

32421320746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16210660375.

The product of its (nonzero) digits is 48384, while the sum is 34.

The spelling of 32421320746 in words is "thirty-two billion, four hundred twenty-one million, three hundred twenty thousand, seven hundred forty-six".