64126657098 has 128 divisors (see below), whose sum is σ = 170104320000. Its totient is φ = 17508591936.

The previous prime is 64126657057. The next prime is 64126657159. The reversal of 64126657098 is 89075662146.

64126657098 is a `hidden beast` number, since 6 + 4 + 1 + 2 + 66 + 570 + 9 + 8 = 666.

It is a super-3 number, since 3×64126657098³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11151528 + ... + 11157276.

It is an arithmetic number, because the mean of its divisors is an integer number (1328940000).

Almost surely, 2^64126657098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64126657098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85052160000).

64126657098 is an abundant number, since it is smaller than the sum of its proper divisors (105977662902).

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

64126657098 is a wasteful number, since it uses less digits than its factorization.

64126657098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073 (or 7067 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 64126657098 in words is "sixty-four billion, one hundred twenty-six million, six hundred fifty-seven thousand, ninety-eight".