64748437443 has 48 divisors (see below), whose sum is σ = 100538081280. Its totient is φ = 40029118272.

The previous prime is 64748437417. The next prime is 64748437469. The reversal of 64748437443 is 34473484746.

It is an interprime number because it is at equal distance from previous prime (64748437417) and next prime (64748437469).

It is not a de Polignac number, because 64748437443 - 2⁹ = 64748436931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64748437443.

It is not an unprimeable number, because it can be changed into a prime (64748437643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4006846 + ... + 4022972.

It is an arithmetic number, because the mean of its divisors is an integer number (2094543360).

Almost surely, 2^64748437443 is an apocalyptic number.

64748437443 is a deficient number, since it is larger than the sum of its proper divisors (35789643837).

64748437443 is a wasteful number, since it uses less digits than its factorization.

64748437443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16648 (or 16645 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 54.

The spelling of 64748437443 in words is "sixty-four billion, seven hundred forty-eight million, four hundred thirty-seven thousand, four hundred forty-three".