154616231540 has 12 divisors (see below), whose sum is σ = 324694086276. Its totient is φ = 61846492608.

The previous prime is 154616231519. The next prime is 154616231579. The reversal of 154616231540 is 45132616451.

It can be written as a sum of positive squares in 2 ways, for example, as 108938283364 + 45677948176 = 330058^2 + 213724^2 .

It is a junction number, because it is equal to n+sod(n) for n = 154616231494 and 154616231503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3865405769 + ... + 3865405808.

It is an arithmetic number, because the mean of its divisors is an integer number (27057840523).

Almost surely, 2^154616231540 is an apocalyptic number.

154616231540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154616231540 is an abundant number, since it is smaller than the sum of its proper divisors (170077854736).

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

154616231540 is a wasteful number, since it uses less digits than its factorization.

154616231540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7730811586 (or 7730811584 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

Adding to 154616231540 its reverse (45132616451), we get a palindrome (199748847991).

The spelling of 154616231540 in words is "one hundred fifty-four billion, six hundred sixteen million, two hundred thirty-one thousand, five hundred forty".