154255132520 has 32 divisors (see below), whose sum is σ = 347087457000. Its totient is φ = 61699669248.

The previous prime is 154255132459. The next prime is 154255132573. The reversal of 154255132520 is 25231552451.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 154214860804 + 40271716 = 392702^2 + 6346^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276142 + ... + 1391778.

Almost surely, 2^154255132520 is an apocalyptic number.

154255132520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154255132520 is an abundant number, since it is smaller than the sum of its proper divisors (192832324480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154255132520 is a wasteful number, since it uses less digits than its factorization.

154255132520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148997 (or 148993 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 154255132520 its reverse (25231552451), we get a palindrome (179486684971).

The spelling of 154255132520 in words is "one hundred fifty-four billion, two hundred fifty-five million, one hundred thirty-two thousand, five hundred twenty".