423425532532451 has 4 divisors (see below), whose sum is σ = 427382780500152. Its totient is φ = 419468284564752.

The previous prime is 423425532532423. The next prime is 423425532532477. The reversal of 423425532532451 is 154235235524324.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423425532532451 is a prime.

It is a super-2 number, since 2×423425532532451² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423425532532451.

It is not an unprimeable number, because it can be changed into a prime (423425532732451) 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, 1978623983690 + ... + 1978623983903.

It is an arithmetic number, because the mean of its divisors is an integer number (106845695125038).

Almost surely, 2^{423425532532451} is an apocalyptic number.

423425532532451 is a deficient number, since it is larger than the sum of its proper divisors (3957247967701).

423425532532451 is a wasteful number, since it uses less digits than its factorization.

423425532532451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957247967700.

The product of its digits is 17280000, while the sum is 50.

The spelling of 423425532532451 in words is "four hundred twenty-three trillion, four hundred twenty-five billion, five hundred thirty-two million, five hundred thirty-two thousand, four hundred fifty-one".