126697138464 has 96 divisors (see below), whose sum is σ = 358755264000. Its totient is φ = 38919278592.

The previous prime is 126697138439. The next prime is 126697138471. The reversal of 126697138464 is 464831796621.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×126697138464³ (a number of 34 digits) contains 333 as substring.

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, 673912 + ... + 841160.

It is an arithmetic number, because the mean of its divisors is an integer number (3737034000).

Almost surely, 2^126697138464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126697138464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179377632000).

126697138464 is an abundant number, since it is smaller than the sum of its proper divisors (232058125536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126697138464 is a wasteful number, since it uses less digits than its factorization.

126697138464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167882 (or 167874 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 57.

The spelling of 126697138464 in words is "one hundred twenty-six billion, six hundred ninety-seven million, one hundred thirty-eight thousand, four hundred sixty-four".