149806913578 has 16 divisors (see below), whose sum is σ = 256850809920. Its totient is φ = 64193223456.

The previous prime is 149806913513. The next prime is 149806913603. The reversal of 149806913578 is 875319608941.

It is a super-2 number, since 2×149806913578² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715651 + ... + 900982.

It is an arithmetic number, because the mean of its divisors is an integer number (16053175620).

Almost surely, 2^149806913578 is an apocalyptic number.

149806913578 is a deficient number, since it is larger than the sum of its proper divisors (107043896342).

149806913578 is a wasteful number, since it uses less digits than its factorization.

149806913578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623261.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 149806913578 in words is "one hundred forty-nine billion, eight hundred six million, nine hundred thirteen thousand, five hundred seventy-eight".