5251390526643 has 4 divisors (see below), whose sum is σ = 7001854035528. Its totient is φ = 3500927017760.

The previous prime is 5251390526639. The next prime is 5251390526647. The reversal of 5251390526643 is 3466250931525.

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

It is an interprime number because it is at equal distance from previous prime (5251390526639) and next prime (5251390526647).

It is a cyclic number.

It is not a de Polignac number, because 5251390526643 - 2² = 5251390526639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5251390526647) 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, 875231754438 + ... + 875231754443.

It is an arithmetic number, because the mean of its divisors is an integer number (1750463508882).

Almost surely, 2^{5251390526643} is an apocalyptic number.

5251390526643 is a deficient number, since it is larger than the sum of its proper divisors (1750463508885).

5251390526643 is a wasteful number, since it uses less digits than its factorization.

5251390526643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750463508884.

The product of its (nonzero) digits is 5832000, while the sum is 51.

The spelling of 5251390526643 in words is "five trillion, two hundred fifty-one billion, three hundred ninety million, five hundred twenty-six thousand, six hundred forty-three".