64784460739 has 2 divisors, whose sum is σ = 64784460740. Its totient is φ = 64784460738.

The previous prime is 64784460737. The next prime is 64784460751. The reversal of 64784460739 is 93706448746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64784460739 - 2¹ = 64784460737 is a prime.

It is a super-2 number, since 2×64784460739² (a number of 22 digits) contains 22 as substring.

Together with 64784460737, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64784460737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32392230369 + 32392230370.

It is an arithmetic number, because the mean of its divisors is an integer number (32392230370).

Almost surely, 2^64784460739 is an apocalyptic number.

64784460739 is a deficient number, since it is larger than the sum of its proper divisors (1).

64784460739 is an equidigital number, since it uses as much as digits as its factorization.

64784460739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24385536, while the sum is 58.

The spelling of 64784460739 in words is "sixty-four billion, seven hundred eighty-four million, four hundred sixty thousand, seven hundred thirty-nine".