84349172737 has 4 divisors (see below), whose sum is σ = 84349873840. Its totient is φ = 84348471636.

The previous prime is 84349172729. The next prime is 84349172779. The reversal of 84349172737 is 73727194348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 84349172737 - 2³ = 84349172729 is a prime.

It is a super-2 number, since 2×84349172737² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84349142737) 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, 119187 + ... + 427672.

It is an arithmetic number, because the mean of its divisors is an integer number (21087468460).

Almost surely, 2^84349172737 is an apocalyptic number.

It is an amenable number.

84349172737 is a deficient number, since it is larger than the sum of its proper divisors (701103).

84349172737 is a wasteful number, since it uses less digits than its factorization.

84349172737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701102.

The product of its digits is 7112448, while the sum is 55.

The spelling of 84349172737 in words is "eighty-four billion, three hundred forty-nine million, one hundred seventy-two thousand, seven hundred thirty-seven".