72040137335 has 4 divisors (see below), whose sum is σ = 86448164808. Its totient is φ = 57632109864.

The previous prime is 72040137331. The next prime is 72040137341. The reversal of 72040137335 is 53373104027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53373104027 = 29 ⋅1840451863.

It is a cyclic number.

It is not a de Polignac number, because 72040137335 - 2² = 72040137331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72040137295 and 72040137304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72040137331) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7204013729 + ... + 7204013738.

It is an arithmetic number, because the mean of its divisors is an integer number (21612041202).

Almost surely, 2^72040137335 is an apocalyptic number.

72040137335 is a deficient number, since it is larger than the sum of its proper divisors (14408027473).

72040137335 is a wasteful number, since it uses less digits than its factorization.

72040137335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14408027472.

The product of its (nonzero) digits is 52920, while the sum is 35.

The spelling of 72040137335 in words is "seventy-two billion, forty million, one hundred thirty-seven thousand, three hundred thirty-five".