4351785145272 has 96 divisors (see below), whose sum is σ = 12065472756480. Its totient is φ = 1416238447680.

The previous prime is 4351785145247. The next prime is 4351785145289. The reversal of 4351785145272 is 2725415871534.

4351785145272 is a `hidden beast` number, since 4 + 3 + 5 + 1 + 7 + 8 + 514 + 52 + 72 = 666.

It is a super-2 number, since 2×4351785145272² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6773247 + ... + 7387857.

It is an arithmetic number, because the mean of its divisors is an integer number (125682007880).

Almost surely, 2^{4351785145272} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4351785145272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6032736378240).

4351785145272 is an abundant number, since it is smaller than the sum of its proper divisors (7713687611208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4351785145272 is a wasteful number, since it uses less digits than its factorization.

4351785145272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616953 (or 616946 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 54.

The spelling of 4351785145272 in words is "four trillion, three hundred fifty-one billion, seven hundred eighty-five million, one hundred forty-five thousand, two hundred seventy-two".