4253990815807 has 4 divisors (see below), whose sum is σ = 4504225569696. Its totient is φ = 4003756061920.

The previous prime is 4253990815757. The next prime is 4253990815817. The reversal of 4253990815807 is 7085180993524.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4253990815807 is a prime.

It is a super-2 number, since 2×4253990815807² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4253990815817) 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, 125117376919 + ... + 125117376952.

It is an arithmetic number, because the mean of its divisors is an integer number (1126056392424).

Almost surely, 2^{4253990815807} is an apocalyptic number.

4253990815807 is a deficient number, since it is larger than the sum of its proper divisors (250234753889).

4253990815807 is a wasteful number, since it uses less digits than its factorization.

4253990815807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250234753888.

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 4253990815807 in words is "four trillion, two hundred fifty-three billion, nine hundred ninety million, eight hundred fifteen thousand, eight hundred seven".