126819751405 has 16 divisors (see below), whose sum is σ = 160205713920. Its totient is φ = 96185867008.

The previous prime is 126819751397. The next prime is 126819751423. The reversal of 126819751405 is 504157918621.

It is a cyclic number.

It is not a de Polignac number, because 126819751405 - 2³ = 126819751397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4866565 + ... + 4892554.

It is an arithmetic number, because the mean of its divisors is an integer number (10012857120).

Almost surely, 2^126819751405 is an apocalyptic number.

It is an amenable number.

126819751405 is a deficient number, since it is larger than the sum of its proper divisors (33385962515).

126819751405 is a wasteful number, since it uses less digits than its factorization.

126819751405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9759260.

The product of its (nonzero) digits is 604800, while the sum is 49.

The spelling of 126819751405 in words is "one hundred twenty-six billion, eight hundred nineteen million, seven hundred fifty-one thousand, four hundred five".