126267913972 has 6 divisors (see below), whose sum is σ = 220968849458. Its totient is φ = 63133956984.

The previous prime is 126267913957. The next prime is 126267913999. The reversal of 126267913972 is 279319762621.

It can be written as a sum of positive squares in only one way, i.e., 99504917136 + 26762996836 = 315444^2 + 163594^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15783489243 + ... + 15783489250.

Almost surely, 2^126267913972 is an apocalyptic number.

It is an amenable number.

126267913972 is a deficient number, since it is larger than the sum of its proper divisors (94700935486).

126267913972 is a wasteful number, since it uses less digits than its factorization.

126267913972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31566978497 (or 31566978495 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The spelling of 126267913972 in words is "one hundred twenty-six billion, two hundred sixty-seven million, nine hundred thirteen thousand, nine hundred seventy-two".