149421693724949 has 4 divisors (see below), whose sum is σ = 149421761395500. Its totient is φ = 149421626054400.

The previous prime is 149421693724921. The next prime is 149421693724957. The reversal of 149421693724949 is 949427396124941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117863983084324 + 31557710640625 = 10856518^2 + 5617625^2 .

It is a cyclic number.

It is not a de Polignac number, because 149421693724949 - 2¹² = 149421693720853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149421693724999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30407402 + ... + 34977899.

It is an arithmetic number, because the mean of its divisors is an integer number (37355440348875).

Almost surely, 2^{149421693724949} is an apocalyptic number.

It is an amenable number.

149421693724949 is a deficient number, since it is larger than the sum of its proper divisors (67670551).

149421693724949 is an equidigital number, since it uses as much as digits as its factorization.

149421693724949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67670550.

The product of its digits is 846526464, while the sum is 74.

The spelling of 149421693724949 in words is "one hundred forty-nine trillion, four hundred twenty-one billion, six hundred ninety-three million, seven hundred twenty-four thousand, nine hundred forty-nine".