149135779578 has 16 divisors (see below), whose sum is σ = 298349138880. Its totient is φ = 49698996576.

The previous prime is 149135779561. The next prime is 149135779609. The reversal of 149135779578 is 875977531941.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3207483 + ... + 3253646.

It is an arithmetic number, because the mean of its divisors is an integer number (18646821180).

Almost surely, 2^149135779578 is an apocalyptic number.

149135779578 is an abundant number, since it is smaller than the sum of its proper divisors (149213359302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149135779578 is a wasteful number, since it uses less digits than its factorization.

149135779578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464981.

The product of its digits is 66679200, while the sum is 66.

The spelling of 149135779578 in words is "one hundred forty-nine billion, one hundred thirty-five million, seven hundred seventy-nine thousand, five hundred seventy-eight".