84128556370 has 16 divisors (see below), whose sum is σ = 160339131288. Its totient is φ = 31671927040.

The previous prime is 84128556367. The next prime is 84128556371. The reversal of 84128556370 is 7365582148.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 80973824481 + 3154731889 = 284559^2 + 56167^2 .

It is a super-3 number, since 3×84128556370³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (84128556371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247436761 + ... + 247437100.

Almost surely, 2^84128556370 is an apocalyptic number.

84128556370 is a deficient number, since it is larger than the sum of its proper divisors (76210574918).

84128556370 is a wasteful number, since it uses less digits than its factorization.

84128556370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494873885.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 84128556370 in words is "eighty-four billion, one hundred twenty-eight million, five hundred fifty-six thousand, three hundred seventy".