154121462551 has 4 divisors (see below), whose sum is σ = 176138814352. Its totient is φ = 132104110752.

The previous prime is 154121462513. The next prime is 154121462557. The reversal of 154121462551 is 155264121451.

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

It is a cyclic number.

It is not a de Polignac number, because 154121462551 - 2⁹ = 154121462039 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 154121462551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154121462557) 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, 11008675890 + ... + 11008675903.

It is an arithmetic number, because the mean of its divisors is an integer number (44034703588).

Almost surely, 2^154121462551 is an apocalyptic number.

154121462551 is a deficient number, since it is larger than the sum of its proper divisors (22017351801).

154121462551 is an equidigital number, since it uses as much as digits as its factorization.

154121462551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22017351800.

The product of its digits is 48000, while the sum is 37.

The spelling of 154121462551 in words is "one hundred fifty-four billion, one hundred twenty-one million, four hundred sixty-two thousand, five hundred fifty-one".