149561378410989 has 16 divisors (see below), whose sum is σ = 204280147995840. Its totient is φ = 97275125600640.

The previous prime is 149561378410921. The next prime is 149561378411017. The reversal of 149561378410989 is 989014873165941.

It is not a de Polignac number, because 149561378410989 - 2⁷ = 149561378410861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149561378410989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149561378410919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18152094 + ... + 25072320.

It is an arithmetic number, because the mean of its divisors is an integer number (12767509249740).

Almost surely, 2^{149561378410989} is an apocalyptic number.

It is an amenable number.

149561378410989 is a deficient number, since it is larger than the sum of its proper divisors (54718769584851).

149561378410989 is a wasteful number, since it uses less digits than its factorization.

149561378410989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095980.

The product of its (nonzero) digits is 470292480, while the sum is 75.

The spelling of 149561378410989 in words is "one hundred forty-nine trillion, five hundred sixty-one billion, three hundred seventy-eight million, four hundred ten thousand, nine hundred eighty-nine".