748621246993 has 2 divisors, whose sum is σ = 748621246994. Its totient is φ = 748621246992.

The previous prime is 748621246991. The next prime is 748621247027. The reversal of 748621246993 is 399642126847.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727852978449 + 20768268544 = 853143^2 + 144112^2 .

It is a cyclic number.

It is not a de Polignac number, because 748621246993 - 2¹ = 748621246991 is a prime.

Together with 748621246991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (748621246991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374310623496 + 374310623497.

It is an arithmetic number, because the mean of its divisors is an integer number (374310623497).

Almost surely, 2^748621246993 is an apocalyptic number.

It is an amenable number.

748621246993 is a deficient number, since it is larger than the sum of its proper divisors (1).

748621246993 is an equidigital number, since it uses as much as digits as its factorization.

748621246993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 61.

The spelling of 748621246993 in words is "seven hundred forty-eight billion, six hundred twenty-one million, two hundred forty-six thousand, nine hundred ninety-three".