748896378521 has 2 divisors, whose sum is σ = 748896378522. Its totient is φ = 748896378520.

The previous prime is 748896378481. The next prime is 748896378569. The reversal of 748896378521 is 125873698847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 682441210000 + 66455168521 = 826100^2 + 257789^2 .

It is a cyclic number.

It is not a de Polignac number, because 748896378521 - 2²² = 748892184217 is a prime.

It is not a weakly prime, because it can be changed into another prime (748896378821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374448189260 + 374448189261.

It is an arithmetic number, because the mean of its divisors is an integer number (374448189261).

Almost surely, 2^748896378521 is an apocalyptic number.

It is an amenable number.

748896378521 is a deficient number, since it is larger than the sum of its proper divisors (1).

748896378521 is an equidigital number, since it uses as much as digits as its factorization.

748896378521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162570240, while the sum is 68.

The spelling of 748896378521 in words is "seven hundred forty-eight billion, eight hundred ninety-six million, three hundred seventy-eight thousand, five hundred twenty-one".