154212540413 has 4 divisors (see below), whose sum is σ = 156740614908. Its totient is φ = 151684465920.

The previous prime is 154212540409. The next prime is 154212540431. The reversal of 154212540413 is 314045212451.

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 61286943844 + 92925596569 = 247562^2 + 304837^2 .

It is a cyclic number.

It is not a de Polignac number, because 154212540413 - 2² = 154212540409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154212540413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154212540473) 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, 1264037156 + ... + 1264037277.

It is an arithmetic number, because the mean of its divisors is an integer number (39185153727).

Almost surely, 2^154212540413 is an apocalyptic number.

It is an amenable number.

154212540413 is a deficient number, since it is larger than the sum of its proper divisors (2528074495).

154212540413 is an equidigital number, since it uses as much as digits as its factorization.

154212540413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528074494.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 154212540413 its reverse (314045212451), we get a palindrome (468257752864).

The spelling of 154212540413 in words is "one hundred fifty-four billion, two hundred twelve million, five hundred forty thousand, four hundred thirteen".