23720511012257 has 8 divisors (see below), whose sum is σ = 23901754363872. Its totient is φ = 23539270248000.

The previous prime is 23720511012229. The next prime is 23720511012307. The reversal of 23720511012257 is 75221011502732.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23720511012257 - 2⁶ = 23720511012193 is a prime.

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 23720511012257.

It is not an unprimeable number, because it can be changed into a prime (23720511042257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20353382 + ... + 21487232.

It is an arithmetic number, because the mean of its divisors is an integer number (2987719295484).

Almost surely, 2^{23720511012257} is an apocalyptic number.

It is an amenable number.

23720511012257 is a deficient number, since it is larger than the sum of its proper divisors (181243351615).

23720511012257 is a wasteful number, since it uses less digits than its factorization.

23720511012257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293679.

The product of its (nonzero) digits is 58800, while the sum is 38.

Adding to 23720511012257 its reverse (75221011502732), we get a palindrome (98941522514989).

The spelling of 23720511012257 in words is "twenty-three trillion, seven hundred twenty billion, five hundred eleven million, twelve thousand, two hundred fifty-seven".