149956578457 has 16 divisors (see below), whose sum is σ = 174316982400. Its totient is φ = 126331516800.

The previous prime is 149956578439. The next prime is 149956578479. The reversal of 149956578457 is 754875659941.

149956578457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 149956578457 - 2¹¹ = 149956576409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149956578157) by changing a digit.

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, 2322669 + ... + 2386357.

It is an arithmetic number, because the mean of its divisors is an integer number (10894811400).

Almost surely, 2^149956578457 is an apocalyptic number.

It is an amenable number.

149956578457 is a deficient number, since it is larger than the sum of its proper divisors (24360403943).

149956578457 is an equidigital number, since it uses as much as digits as its factorization.

149956578457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69456.

The product of its digits is 381024000, while the sum is 70.

The spelling of 149956578457 in words is "one hundred forty-nine billion, nine hundred fifty-six million, five hundred seventy-eight thousand, four hundred fifty-seven".