69127978084 has 243 divisors, whose sum is σ = 153217061739. Its totient is φ = 27259752960.

The previous prime is 69127978079. The next prime is 69127978091. The reversal of 69127978084 is 48087972196.

The square root of 69127978084 is 262922.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 32156379684 + 36971598400 = 179322^2 + 192280^2 .

It is a super-2 number, since 2×69127978084² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1868323714 + ... + 1868323750.

Almost surely, 2^69127978084 is an apocalyptic number.

69127978084 is the 262922-nd square number.

It is an amenable number.

69127978084 is an abundant number, since it is smaller than the sum of its proper divisors (84089083655).

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

69127978084 is a wasteful number, since it uses less digits than its factorization.

69127978084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 69127978084 in words is "sixty-nine billion, one hundred twenty-seven million, nine hundred seventy-eight thousand, eighty-four".