655461051531 has 64 divisors (see below), whose sum is σ = 1087411723776. Its totient is φ = 345032755200.

The previous prime is 655461051437. The next prime is 655461051541. The reversal of 655461051531 is 135150164556.

It is not a de Polignac number, because 655461051531 - 2⁷ = 655461051403 is a prime.

It is a super-2 number, since 2×655461051531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (655461051541) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 36142336 + ... + 36160466.

It is an arithmetic number, because the mean of its divisors is an integer number (16990808184).

Almost surely, 2^655461051531 is an apocalyptic number.

655461051531 is a deficient number, since it is larger than the sum of its proper divisors (431950672245).

655461051531 is a wasteful number, since it uses less digits than its factorization.

655461051531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23132.

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 655461051531 in words is "six hundred fifty-five billion, four hundred sixty-one million, fifty-one thousand, five hundred thirty-one".