149433614978 has 4 divisors (see below), whose sum is σ = 224150422470. Its totient is φ = 74716807488.

The previous prime is 149433614977. The next prime is 149433615011. The reversal of 149433614978 is 879416334941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879416334941 = 41 ⋅21449178901.

It can be written as a sum of positive squares in only one way, i.e., 149333554969 + 100060009 = 386437^2 + 10003^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149433614977) by changing a digit.

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 as a sum of consecutive naturals, namely, 37358403743 + ... + 37358403746.

Almost surely, 2^149433614978 is an apocalyptic number.

149433614978 is a deficient number, since it is larger than the sum of its proper divisors (74716807492).

149433614978 is an equidigital number, since it uses as much as digits as its factorization.

149433614978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74716807491.

The product of its digits is 15676416, while the sum is 59.

The spelling of 149433614978 in words is "one hundred forty-nine billion, four hundred thirty-three million, six hundred fourteen thousand, nine hundred seventy-eight".