126630560251 has 16 divisors (see below), whose sum is σ = 144819188640. Its totient is φ = 109757652480.

The previous prime is 126630560197. The next prime is 126630560261. The reversal of 126630560251 is 152065036621.

It is a cyclic number.

It is not a de Polignac number, because 126630560251 - 2⁷ = 126630560123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126630560251.

It is not an unprimeable number, because it can be changed into a prime (126630560261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2240560 + ... + 2296381.

It is an arithmetic number, because the mean of its divisors is an integer number (9051199290).

Almost surely, 2^126630560251 is an apocalyptic number.

126630560251 is a deficient number, since it is larger than the sum of its proper divisors (18188628389).

126630560251 is a wasteful number, since it uses less digits than its factorization.

126630560251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537086.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 126630560251 its reverse (152065036621), we get a palindrome (278695596872).

The spelling of 126630560251 in words is "one hundred twenty-six billion, six hundred thirty million, five hundred sixty thousand, two hundred fifty-one".