84778362562152 has 256 divisors, whose sum is σ = 265344507072000. Its totient is φ = 22009074941952.

The previous prime is 84778362562151. The next prime is 84778362562211. The reversal of 84778362562152 is 25126526387748.

It is a happy number.

It is a super-2 number, since 2×84778362562152² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84778362562151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 858752698 + ... + 858851414.

It is an arithmetic number, because the mean of its divisors is an integer number (1036501980750).

Almost surely, 2^{84778362562152} 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 84778362562152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132672253536000).

84778362562152 is an abundant number, since it is smaller than the sum of its proper divisors (180566144509848).

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

84778362562152 is a wasteful number, since it uses less digits than its factorization.

84778362562152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109148 (or 109144 counting only the distinct ones).

The product of its digits is 270950400, while the sum is 66.

The spelling of 84778362562152 in words is "eighty-four trillion, seven hundred seventy-eight billion, three hundred sixty-two million, five hundred sixty-two thousand, one hundred fifty-two".