72335420531 has 8 divisors (see below), whose sum is σ = 78915127728. Its totient is φ = 65756340000.

The previous prime is 72335420527. The next prime is 72335420533. The reversal of 72335420531 is 13502453327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72335420531 - 2² = 72335420527 is a prime.

It is a super-2 number, since 2×72335420531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72335420491 and 72335420500.

It is not an unprimeable number, because it can be changed into a prime (72335420533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103481 + ... + 394181.

It is an arithmetic number, because the mean of its divisors is an integer number (9864390966).

Almost surely, 2^72335420531 is an apocalyptic number.

72335420531 is a deficient number, since it is larger than the sum of its proper divisors (6579707197).

72335420531 is a wasteful number, since it uses less digits than its factorization.

72335420531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313333.

The product of its (nonzero) digits is 75600, while the sum is 35.

Adding to 72335420531 its reverse (13502453327), we get a palindrome (85837873858).

The spelling of 72335420531 in words is "seventy-two billion, three hundred thirty-five million, four hundred twenty thousand, five hundred thirty-one".