72554135602231 has 8 divisors (see below), whose sum is σ = 76822788792384. Its totient is φ = 68285567174400.

The previous prime is 72554135602189. The next prime is 72554135602237. The reversal of 72554135602231 is 13220653145527.

It is a happy number.

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 72554135602231 - 2⁹ = 72554135601719 is a prime.

It is a super-2 number, since 2×72554135602231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72554135602237) 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, 19424070 + ... + 22856131.

It is an arithmetic number, because the mean of its divisors is an integer number (9602848599048).

Almost surely, 2^{72554135602231} is an apocalyptic number.

72554135602231 is a deficient number, since it is larger than the sum of its proper divisors (4268653190153).

72554135602231 is a wasteful number, since it uses less digits than its factorization.

72554135602231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42381161.

The product of its (nonzero) digits is 1512000, while the sum is 46.

Adding to 72554135602231 its reverse (13220653145527), we get a palindrome (85774788747758).

The spelling of 72554135602231 in words is "seventy-two trillion, five hundred fifty-four billion, one hundred thirty-five million, six hundred two thousand, two hundred thirty-one".