64980914299493 has 4 divisors (see below), whose sum is σ = 65267173834080. Its totient is φ = 64694654764908.

The previous prime is 64980914299463. The next prime is 64980914299523. The reversal of 64980914299493 is 39499241908946.

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 an interprime number because it is at equal distance from previous prime (64980914299463) and next prime (64980914299523).

It is a cyclic number.

It is not a de Polignac number, because 64980914299493 - 2¹⁶ = 64980914233957 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 (64980914299463) 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, 143129766953 + ... + 143129767406.

It is an arithmetic number, because the mean of its divisors is an integer number (16316793458520).

Almost surely, 2^{64980914299493} is an apocalyptic number.

It is an amenable number.

64980914299493 is a deficient number, since it is larger than the sum of its proper divisors (286259534587).

64980914299493 is a wasteful number, since it uses less digits than its factorization.

64980914299493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286259534586.

The product of its (nonzero) digits is 1088391168, while the sum is 77.

The spelling of 64980914299493 in words is "sixty-four trillion, nine hundred eighty billion, nine hundred fourteen million, two hundred ninety-nine thousand, four hundred ninety-three".