73964315563 has 4 divisors (see below), whose sum is σ = 73966111000. Its totient is φ = 73962520128.

The previous prime is 73964315507. The next prime is 73964315573. The reversal of 73964315563 is 36551346937.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73964315563 - 2¹³ = 73964307371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73964315563.

It is not an unprimeable number, because it can be changed into a prime (73964315573) 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, 834438 + ... + 918811.

It is an arithmetic number, because the mean of its divisors is an integer number (18491527750).

Almost surely, 2^73964315563 is an apocalyptic number.

73964315563 is a deficient number, since it is larger than the sum of its proper divisors (1795437).

73964315563 is a wasteful number, since it uses less digits than its factorization.

73964315563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795436.

The product of its digits is 6123600, while the sum is 52.

The spelling of 73964315563 in words is "seventy-three billion, nine hundred sixty-four million, three hundred fifteen thousand, five hundred sixty-three".