240072120251 has 2 divisors, whose sum is σ = 240072120252. Its totient is φ = 240072120250.

The previous prime is 240072120221. The next prime is 240072120313. The reversal of 240072120251 is 152021270042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240072120251 - 2³⁰ = 238998378427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240072120251.

It is not a weakly prime, because it can be changed into another prime (240072120221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120036060125 + 120036060126.

It is an arithmetic number, because the mean of its divisors is an integer number (120036060126).

Almost surely, 2^240072120251 is an apocalyptic number.

240072120251 is a deficient number, since it is larger than the sum of its proper divisors (1).

240072120251 is an equidigital number, since it uses as much as digits as its factorization.

240072120251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 240072120251 its reverse (152021270042), we get a palindrome (392093390293).

The spelling of 240072120251 in words is "two hundred forty billion, seventy-two million, one hundred twenty thousand, two hundred fifty-one".