5126897797 has 4 divisors (see below), whose sum is σ = 5859311776. Its totient is φ = 4394483820.

The previous prime is 5126897761. The next prime is 5126897803. The reversal of 5126897797 is 7977986215.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7977986215 = 5 ⋅1595597243.

It is a cyclic number.

It is not a de Polignac number, because 5126897797 - 2¹⁹ = 5126373509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5126897747) 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, 366206979 + ... + 366206992.

It is an arithmetic number, because the mean of its divisors is an integer number (1464827944).

Almost surely, 2^5126897797 is an apocalyptic number.

It is an amenable number.

5126897797 is a deficient number, since it is larger than the sum of its proper divisors (732413979).

5126897797 is an equidigital number, since it uses as much as digits as its factorization.

5126897797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732413978.

The product of its digits is 13335840, while the sum is 61.

The square root of 5126897797 is about 71602.3588787409. The cubic root of 5126897797 is about 1724.3214074677.

The spelling of 5126897797 in words is "five billion, one hundred twenty-six million, eight hundred ninety-seven thousand, seven hundred ninety-seven".