255403021641 has 16 divisors (see below), whose sum is σ = 346268879040. Its totient is φ = 167405325120.

The previous prime is 255403021633. The next prime is 255403021651. The reversal of 255403021641 is 146120304552.

It is not a de Polignac number, because 255403021641 - 2³ = 255403021633 is a prime.

It is a super-2 number, since 2×255403021641² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255403021651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127830 + ... + 726048.

It is an arithmetic number, because the mean of its divisors is an integer number (21641804940).

Almost surely, 2^255403021641 is an apocalyptic number.

It is an amenable number.

255403021641 is a deficient number, since it is larger than the sum of its proper divisors (90865857399).

255403021641 is a wasteful number, since it uses less digits than its factorization.

255403021641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600616.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 255403021641 in words is "two hundred fifty-five billion, four hundred three million, twenty-one thousand, six hundred forty-one".