655622036644 has 96 divisors (see below), whose sum is σ = 1234460304000. Its totient is φ = 304245406080.

The previous prime is 655622036581. The next prime is 655622036651. The reversal of 655622036644 is 446630226556.

It is a super-4 number, since 4×655622036644⁴ (a number of 48 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 617927874 + ... + 617928934.

It is an arithmetic number, because the mean of its divisors is an integer number (12858961500).

Almost surely, 2^655622036644 is an apocalyptic number.

It is an amenable number.

655622036644 is a deficient number, since it is larger than the sum of its proper divisors (578838267356).

655622036644 is a wasteful number, since it uses less digits than its factorization.

655622036644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 655622036644 in words is "six hundred fifty-five billion, six hundred twenty-two million, thirty-six thousand, six hundred forty-four".