72161425734 has 16 divisors (see below), whose sum is σ = 147842921520. Its totient is φ = 23467130240.

The previous prime is 72161425729. The next prime is 72161425741. The reversal of 72161425734 is 43752416127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146669319 + ... + 146669810.

It is an arithmetic number, because the mean of its divisors is an integer number (9240182595).

Almost surely, 2^72161425734 is an apocalyptic number.

72161425734 is an abundant number, since it is smaller than the sum of its proper divisors (75681495786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72161425734 is a wasteful number, since it uses less digits than its factorization.

72161425734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293339175.

The product of its digits is 282240, while the sum is 42.

The spelling of 72161425734 in words is "seventy-two billion, one hundred sixty-one million, four hundred twenty-five thousand, seven hundred thirty-four".