126037661639 has 2 divisors, whose sum is σ = 126037661640. Its totient is φ = 126037661638.

The previous prime is 126037661621. The next prime is 126037661653. The reversal of 126037661639 is 936166730621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126037661639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126037661699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63018830819 + 63018830820.

It is an arithmetic number, because the mean of its divisors is an integer number (63018830820).

Almost surely, 2^126037661639 is an apocalyptic number.

126037661639 is a deficient number, since it is larger than the sum of its proper divisors (1).

126037661639 is an equidigital number, since it uses as much as digits as its factorization.

126037661639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 126037661639 in words is "one hundred twenty-six billion, thirty-seven million, six hundred sixty-one thousand, six hundred thirty-nine".