72031137054005 has 4 divisors (see below), whose sum is σ = 86437364464812. Its totient is φ = 57624909643200.

The previous prime is 72031137053999. The next prime is 72031137054043. The reversal of 72031137054005 is 50045073113027.

It is a happy number.

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 26135417022961 + 45895720031044 = 5112281^2 + 6774638^2 .

It is not a de Polignac number, because 72031137054005 - 2¹⁴ = 72031137037621 is a prime.

It is a super-2 number, since 2×72031137054005² (a number of 29 digits) contains 22 as substring.

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 72031137054005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7203113705396 + ... + 7203113705405.

It is an arithmetic number, because the mean of its divisors is an integer number (21609341116203).

Almost surely, 2^{72031137054005} is an apocalyptic number.

It is an amenable number.

72031137054005 is a deficient number, since it is larger than the sum of its proper divisors (14406227410807).

72031137054005 is a wasteful number, since it uses less digits than its factorization.

72031137054005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14406227410806.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 72031137054005 in words is "seventy-two trillion, thirty-one billion, one hundred thirty-seven million, fifty-four thousand, five".