154102342551 has 4 divisors (see below), whose sum is σ = 205469790072. Its totient is φ = 102734895032.

The previous prime is 154102342547. The next prime is 154102342591. The reversal of 154102342551 is 155243201451.

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 154102342551 - 2² = 154102342547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154102342591) 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, 25683723756 + ... + 25683723761.

It is an arithmetic number, because the mean of its divisors is an integer number (51367447518).

Almost surely, 2^154102342551 is an apocalyptic number.

154102342551 is a deficient number, since it is larger than the sum of its proper divisors (51367447521).

154102342551 is an equidigital number, since it uses as much as digits as its factorization.

154102342551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51367447520.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 154102342551 in words is "one hundred fifty-four billion, one hundred two million, three hundred forty-two thousand, five hundred fifty-one".