73847474837 has 4 divisors (see below), whose sum is σ = 73901735916. Its totient is φ = 73793213760.

The previous prime is 73847474807. The next prime is 73847474849.

73847474837 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5057200996 + 68790273841 = 71114^2 + 262279^2 .

It is a cyclic number.

It is not a de Polignac number, because 73847474837 - 2⁶ = 73847474773 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 73847474837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73847474807) 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, 27128498 + ... + 27131219.

It is an arithmetic number, because the mean of its divisors is an integer number (18475433979).

Almost surely, 2^73847474837 is an apocalyptic number.

It is an amenable number.

73847474837 is a deficient number, since it is larger than the sum of its proper divisors (54261079).

73847474837 is a wasteful number, since it uses less digits than its factorization.

73847474837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54261078.

The product of its digits is 88510464, while the sum is 62.

The spelling of 73847474837 in words is "seventy-three billion, eight hundred forty-seven million, four hundred seventy-four thousand, eight hundred thirty-seven".