101244546778 has 4 divisors (see below), whose sum is σ = 151866820170. Its totient is φ = 50622273388.

The previous prime is 101244546773. The next prime is 101244546827. The reversal of 101244546778 is 877645442101.

101244546778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59886410089 + 41358136689 = 244717^2 + 203367^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (101244546773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25311136693 + ... + 25311136696.

Almost surely, 2^101244546778 is an apocalyptic number.

101244546778 is a deficient number, since it is larger than the sum of its proper divisors (50622273392).

101244546778 is an equidigital number, since it uses as much as digits as its factorization.

101244546778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50622273391.

The product of its (nonzero) digits is 1505280, while the sum is 49.

Adding to 101244546778 its reverse (877645442101), we get a palindrome (978889988879).

The spelling of 101244546778 in words is "one hundred one billion, two hundred forty-four million, five hundred forty-six thousand, seven hundred seventy-eight".