421374825751 has 16 divisors (see below), whose sum is σ = 467978752800. Its totient is φ = 376198801920.

The previous prime is 421374825721. The next prime is 421374825761. The reversal of 421374825751 is 157528473124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 421374825751 - 2¹³ = 421374817559 is a prime.

It is a super-2 number, since 2×421374825751² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421374825695 and 421374825704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421374825721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938976 + ... + 1313173.

It is an arithmetic number, because the mean of its divisors is an integer number (29248672050).

Almost surely, 2^421374825751 is an apocalyptic number.

421374825751 is a deficient number, since it is larger than the sum of its proper divisors (46603927049).

421374825751 is a wasteful number, since it uses less digits than its factorization.

421374825751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252466.

The product of its digits is 1881600, while the sum is 49.

The spelling of 421374825751 in words is "four hundred twenty-one billion, three hundred seventy-four million, eight hundred twenty-five thousand, seven hundred fifty-one".