101478155722878 has 128 divisors (see below), whose sum is σ = 236283304988160. Its totient is φ = 28731801600000.

The previous prime is 101478155722873. The next prime is 101478155722901. The reversal of 101478155722878 is 878227551874101.

101478155722878 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101478155722873) 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, 30991278 + ... + 34108878.

It is an arithmetic number, because the mean of its divisors is an integer number (1845963320220).

Almost surely, 2^{101478155722878} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101478155722878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118141652494080).

101478155722878 is an abundant number, since it is smaller than the sum of its proper divisors (134805149265282).

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

101478155722878 is a wasteful number, since it uses less digits than its factorization.

101478155722878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117994.

The product of its (nonzero) digits is 70246400, while the sum is 66.

The spelling of 101478155722878 in words is "one hundred one trillion, four hundred seventy-eight billion, one hundred fifty-five million, seven hundred twenty-two thousand, eight hundred seventy-eight".