154157431277 has 4 divisors (see below), whose sum is σ = 154166144220. Its totient is φ = 154148718336.

The previous prime is 154157431237. The next prime is 154157431289. The reversal of 154157431277 is 772134751451.

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

It can be written as a sum of positive squares in 2 ways, for example, as 137039895721 + 17117535556 = 370189^2 + 130834^2 .

It is a cyclic number.

It is not a de Polignac number, because 154157431277 - 2¹⁶ = 154157365741 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 (154157431237) 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, 4329878 + ... + 4365335.

It is an arithmetic number, because the mean of its divisors is an integer number (38541536055).

Almost surely, 2^154157431277 is an apocalyptic number.

It is an amenable number.

154157431277 is a deficient number, since it is larger than the sum of its proper divisors (8712943).

154157431277 is an equidigital number, since it uses as much as digits as its factorization.

154157431277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712942.

The product of its digits is 823200, while the sum is 47.

The spelling of 154157431277 in words is "one hundred fifty-four billion, one hundred fifty-seven million, four hundred thirty-one thousand, two hundred seventy-seven".