872007724451 has 4 divisors (see below), whose sum is σ = 872009673504. Its totient is φ = 872005775400.

The previous prime is 872007724439. The next prime is 872007724517. The reversal of 872007724451 is 154427700278.

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

It is a cyclic number.

It is not a de Polignac number, because 872007724451 - 2¹⁸ = 872007462307 is a prime.

It is a super-2 number, since 2×872007724451² (a number of 25 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 = 872007724396 and 872007724405.

It is not an unprimeable number, because it can be changed into a prime (872007724411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69161 + ... + 1322421.

It is an arithmetic number, because the mean of its divisors is an integer number (218002418376).

Almost surely, 2^872007724451 is an apocalyptic number.

872007724451 is a deficient number, since it is larger than the sum of its proper divisors (1949053).

872007724451 is a wasteful number, since it uses less digits than its factorization.

872007724451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949052.

The product of its (nonzero) digits is 878080, while the sum is 47.

The spelling of 872007724451 in words is "eight hundred seventy-two billion, seven million, seven hundred twenty-four thousand, four hundred fifty-one".