149778391105 has 16 divisors (see below), whose sum is σ = 206670559104. Its totient is φ = 102075085440.

The previous prime is 149778391097. The next prime is 149778391171. The reversal of 149778391105 is 501193877941.

149778391105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149778391105 - 2³ = 149778391097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13121236 + ... + 13132645.

It is an arithmetic number, because the mean of its divisors is an integer number (12916909944).

Almost surely, 2^149778391105 is an apocalyptic number.

It is an amenable number.

149778391105 is a deficient number, since it is larger than the sum of its proper divisors (56892167999).

149778391105 is a wasteful number, since it uses less digits than its factorization.

149778391105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26254056.

The product of its (nonzero) digits is 1905120, while the sum is 55.

The spelling of 149778391105 in words is "one hundred forty-nine billion, seven hundred seventy-eight million, three hundred ninety-one thousand, one hundred five".