65431222213457 has 32 divisors (see below), whose sum is σ = 71289039144960. Its totient is φ = 59827887187200.

The previous prime is 65431222213433. The next prime is 65431222213471. The reversal of 65431222213457 is 75431222213456.

It is a happy number.

It is not a de Polignac number, because 65431222213457 - 2³⁶ = 65362502736721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65431222213417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22537988 + ... + 25274954.

It is an arithmetic number, because the mean of its divisors is an integer number (2227782473280).

Almost surely, 2^{65431222213457} is an apocalyptic number.

65431222213457 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

65431222213457 is a deficient number, since it is larger than the sum of its proper divisors (5857816931503).

65431222213457 is a wasteful number, since it uses less digits than its factorization.

65431222213457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737341.

The product of its digits is 2419200, while the sum is 47.

Subtracting 65431222213457 from its reverse (75431222213456), we obtain a palindrome (9999999999999).

The spelling of 65431222213457 in words is "sixty-five trillion, four hundred thirty-one billion, two hundred twenty-two million, two hundred thirteen thousand, four hundred fifty-seven".