24745311985156 has 81 divisors (see below), whose sum is σ = 53168052831957. Its totient is φ = 10046431533600.

The previous prime is 24745311985153. The next prime is 24745311985231. The reversal of 24745311985156 is 65158911354742.

The square root of 24745311985156 is 4974466.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4248685602756 + 20496626382400 = 2061234^2 + 4527320^2 .

It is a super-2 number, since 2×24745311985156² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 24745311985094 and 24745311985103.

It is not an unprimeable number, because it can be changed into a prime (24745311985151) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1323198606 + ... + 1323217306.

Almost surely, 2^{24745311985156} is an apocalyptic number.

24745311985156 is the 4974466-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 24745311985156

24745311985156 is an abundant number, since it is smaller than the sum of its proper divisors (28422740846801).

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

24745311985156 is an frugal number, since it uses more digits than its factorization.

24745311985156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37458 (or 18729 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 61.

The spelling of 24745311985156 in words is "twenty-four trillion, seven hundred forty-five billion, three hundred eleven million, nine hundred eighty-five thousand, one hundred fifty-six".