32451312493 has 4 divisors (see below), whose sum is σ = 32638892508. Its totient is φ = 32263732480.

The previous prime is 32451312457. The next prime is 32451312497. The reversal of 32451312493 is 39421315423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11410939684 + 21040372809 = 106822^2 + 145053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32451312493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32451312497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93789748 + ... + 93790093.

It is an arithmetic number, because the mean of its divisors is an integer number (8159723127).

Almost surely, 2^32451312493 is an apocalyptic number.

It is an amenable number.

32451312493 is a deficient number, since it is larger than the sum of its proper divisors (187580015).

32451312493 is a wasteful number, since it uses less digits than its factorization.

32451312493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187580014.

The product of its digits is 77760, while the sum is 37.

The spelling of 32451312493 in words is "thirty-two billion, four hundred fifty-one million, three hundred twelve thousand, four hundred ninety-three".