245206591291801 has 4 divisors (see below), whose sum is σ = 253116481333504. Its totient is φ = 237296701250100.

The previous prime is 245206591291759. The next prime is 245206591291811. The reversal of 245206591291801 is 108192195602542.

245206591291801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245206591291801 - 2²³ = 245206582903193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245206591291811) 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, 3954945020805 + ... + 3954945020866.

It is an arithmetic number, because the mean of its divisors is an integer number (63279120333376).

Almost surely, 2^{245206591291801} is an apocalyptic number.

It is an amenable number.

245206591291801 is a deficient number, since it is larger than the sum of its proper divisors (7909890041703).

245206591291801 is an equidigital number, since it uses as much as digits as its factorization.

245206591291801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7909890041702.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 245206591291801 in words is "two hundred forty-five trillion, two hundred six billion, five hundred ninety-one million, two hundred ninety-one thousand, eight hundred one".