149507905645 has 64 divisors (see below), whose sum is σ = 219427024896. Its totient is φ = 95460664320.

The previous prime is 149507905637. The next prime is 149507905649. The reversal of 149507905645 is 546509705941.

It is not a de Polignac number, because 149507905645 - 2³ = 149507905637 is a prime.

It is a super-3 number, since 3×149507905645³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149507905649) 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, 22012200 + ... + 22018990.

It is an arithmetic number, because the mean of its divisors is an integer number (3428547264).

Almost surely, 2^149507905645 is an apocalyptic number.

It is an amenable number.

149507905645 is a deficient number, since it is larger than the sum of its proper divisors (69919119251).

149507905645 is a wasteful number, since it uses less digits than its factorization.

149507905645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7210.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 149507905645 in words is "one hundred forty-nine billion, five hundred seven million, nine hundred five thousand, six hundred forty-five".