154539771157 has 4 divisors (see below), whose sum is σ = 154541508160. Its totient is φ = 154538034156.

The previous prime is 154539771103. The next prime is 154539771187. The reversal of 154539771157 is 751177935451.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 154539771157 - 2¹⁵ = 154539738389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154539771098 and 154539771107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154539771187) 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, 727407 + ... + 915532.

It is an arithmetic number, because the mean of its divisors is an integer number (38635377040).

Almost surely, 2^154539771157 is an apocalyptic number.

It is an amenable number.

154539771157 is a deficient number, since it is larger than the sum of its proper divisors (1737003).

154539771157 is an equidigital number, since it uses as much as digits as its factorization.

154539771157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737002.

The product of its digits is 4630500, while the sum is 55.

The spelling of 154539771157 in words is "one hundred fifty-four billion, five hundred thirty-nine million, seven hundred seventy-one thousand, one hundred fifty-seven".