154528721240 has 16 divisors (see below), whose sum is σ = 347689622880. Its totient is φ = 61811488480.

The previous prime is 154528721233. The next prime is 154528721257. The reversal of 154528721240 is 42127825451.

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, 1931608976 + ... + 1931609055.

It is an arithmetic number, because the mean of its divisors is an integer number (21730601430).

Almost surely, 2^154528721240 is an apocalyptic number.

154528721240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154528721240 is an abundant number, since it is smaller than the sum of its proper divisors (193160901640).

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

154528721240 is a wasteful number, since it uses less digits than its factorization.

154528721240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863218042 (or 3863218038 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 41.

The spelling of 154528721240 in words is "one hundred fifty-four billion, five hundred twenty-eight million, seven hundred twenty-one thousand, two hundred forty".