154154713521 has 4 divisors (see below), whose sum is σ = 205539618032. Its totient is φ = 102769809012.

The previous prime is 154154713507. The next prime is 154154713541. The reversal of 154154713521 is 125317451451.

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 not a de Polignac number, because 154154713521 - 2¹³ = 154154705329 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 154154713521.

It is not an unprimeable number, because it can be changed into a prime (154154713541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25692452251 + ... + 25692452256.

It is an arithmetic number, because the mean of its divisors is an integer number (51384904508).

Almost surely, 2^154154713521 is an apocalyptic number.

It is an amenable number.

154154713521 is a deficient number, since it is larger than the sum of its proper divisors (51384904511).

154154713521 is an equidigital number, since it uses as much as digits as its factorization.

154154713521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51384904510.

The product of its digits is 84000, while the sum is 39.

The spelling of 154154713521 in words is "one hundred fifty-four billion, one hundred fifty-four million, seven hundred thirteen thousand, five hundred twenty-one".