255553191937 has 4 divisors (see below), whose sum is σ = 255759784276. Its totient is φ = 255346599600.

The previous prime is 255553191919. The next prime is 255553191983. The reversal of 255553191937 is 739191355552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 184690219536 + 70862972401 = 429756^2 + 266201^2 .

It is a cyclic number.

It is not a de Polignac number, because 255553191937 - 2³¹ = 253405708289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255553197937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103294314 + ... + 103296787.

It is an arithmetic number, because the mean of its divisors is an integer number (63939946069).

Almost surely, 2^255553191937 is an apocalyptic number.

It is an amenable number.

255553191937 is a deficient number, since it is larger than the sum of its proper divisors (206592339).

255553191937 is a wasteful number, since it uses less digits than its factorization.

255553191937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206592338.

The product of its digits is 6378750, while the sum is 55.

The spelling of 255553191937 in words is "two hundred fifty-five billion, five hundred fifty-three million, one hundred ninety-one thousand, nine hundred thirty-seven".