5421986697947 has 2 divisors, whose sum is σ = 5421986697948. Its totient is φ = 5421986697946.

The previous prime is 5421986697943. The next prime is 5421986697971. The reversal of 5421986697947 is 7497966891245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5421986697947 - 2² = 5421986697943 is a prime.

It is a super-2 number, since 2×5421986697947² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5421986697943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710993348973 + 2710993348974.

It is an arithmetic number, because the mean of its divisors is an integer number (2710993348974).

Almost surely, 2^{5421986697947} is an apocalyptic number.

5421986697947 is a deficient number, since it is larger than the sum of its proper divisors (1).

5421986697947 is an equidigital number, since it uses as much as digits as its factorization.

5421986697947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1646023680, while the sum is 77.

The spelling of 5421986697947 in words is "five trillion, four hundred twenty-one billion, nine hundred eighty-six million, six hundred ninety-seven thousand, nine hundred forty-seven".