154131431551 has 4 divisors (see below), whose sum is σ = 154143386152. Its totient is φ = 154119476952.

The previous prime is 154131431459. The next prime is 154131431563. The reversal of 154131431551 is 155134131451.

It is a happy number.

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 154131431551 - 2⁷ = 154131431423 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 (154131431591) 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, 5957940 + ... + 5983753.

It is an arithmetic number, because the mean of its divisors is an integer number (38535846538).

Almost surely, 2^154131431551 is an apocalyptic number.

154131431551 is a deficient number, since it is larger than the sum of its proper divisors (11954601).

154131431551 is a wasteful number, since it uses less digits than its factorization.

154131431551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11954600.

The product of its digits is 18000, while the sum is 34.

The spelling of 154131431551 in words is "one hundred fifty-four billion, one hundred thirty-one million, four hundred thirty-one thousand, five hundred fifty-one".