72345526349 has 12 divisors (see below), whose sum is σ = 76861266624. Its totient is φ = 68081233344.

The previous prime is 72345526303. The next prime is 72345526369. The reversal of 72345526349 is 94362554327.

It is not a de Polignac number, because 72345526349 - 2¹⁶ = 72345460813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72345526297 and 72345526306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72345526369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4027502 + ... + 4045424.

It is an arithmetic number, because the mean of its divisors is an integer number (6405105552).

Almost surely, 2^72345526349 is an apocalyptic number.

It is an amenable number.

72345526349 is a deficient number, since it is larger than the sum of its proper divisors (4515740275).

72345526349 is a wasteful number, since it uses less digits than its factorization.

72345526349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31924 (or 31907 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 50.

The spelling of 72345526349 in words is "seventy-two billion, three hundred forty-five million, five hundred twenty-six thousand, three hundred forty-nine".