154361338621 has 4 divisors (see below), whose sum is σ = 176412958432. Its totient is φ = 132309718812.

The previous prime is 154361338609. The next prime is 154361338633. The reversal of 154361338621 is 126833163451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126833163451 = 281 ⋅451363571.

It is an interprime number because it is at equal distance from previous prime (154361338609) and next prime (154361338633).

It is a cyclic number.

It is not a de Polignac number, because 154361338621 - 2⁷ = 154361338493 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 (154361332621) 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, 11025809895 + ... + 11025809908.

It is an arithmetic number, because the mean of its divisors is an integer number (44103239608).

Almost surely, 2^154361338621 is an apocalyptic number.

It is an amenable number.

154361338621 is a deficient number, since it is larger than the sum of its proper divisors (22051619811).

154361338621 is an equidigital number, since it uses as much as digits as its factorization.

154361338621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22051619810.

The product of its digits is 311040, while the sum is 43.

The spelling of 154361338621 in words is "one hundred fifty-four billion, three hundred sixty-one million, three hundred thirty-eight thousand, six hundred twenty-one".