154006697813 has 4 divisors (see below), whose sum is σ = 154144574220. Its totient is φ = 153868821408.

The previous prime is 154006697777. The next prime is 154006697837. The reversal of 154006697813 is 318796600451.

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 19011445924 + 134995251889 = 137882^2 + 367417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154006697813 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 (154006697213) 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, 68936528 + ... + 68938761.

It is an arithmetic number, because the mean of its divisors is an integer number (38536143555).

Almost surely, 2^154006697813 is an apocalyptic number.

It is an amenable number.

154006697813 is a deficient number, since it is larger than the sum of its proper divisors (137876407).

154006697813 is a wasteful number, since it uses less digits than its factorization.

154006697813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137876406.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 154006697813 in words is "one hundred fifty-four billion, six million, six hundred ninety-seven thousand, eight hundred thirteen".