655540151540 has 12 divisors (see below), whose sum is σ = 1376634318276. Its totient is φ = 262216060608.

The previous prime is 655540151509. The next prime is 655540151603. The reversal of 655540151540 is 45151045556.

It can be written as a sum of positive squares in 2 ways, for example, as 166735022224 + 488805129316 = 408332^2 + 699146^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16388503769 + ... + 16388503808.

It is an arithmetic number, because the mean of its divisors is an integer number (114719526523).

Almost surely, 2^655540151540 is an apocalyptic number.

It is an amenable number.

655540151540 is an abundant number, since it is smaller than the sum of its proper divisors (721094166736).

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

655540151540 is a wasteful number, since it uses less digits than its factorization.

655540151540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32777007586 (or 32777007584 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 41.

The spelling of 655540151540 in words is "six hundred fifty-five billion, five hundred forty million, one hundred fifty-one thousand, five hundred forty".