72136356136487 has 8 divisors (see below), whose sum is σ = 75933993107760. Its totient is φ = 68338817830080.

The previous prime is 72136356136483. The next prime is 72136356136511. The reversal of 72136356136487 is 78463165363127.

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 72136356136487 - 2² = 72136356136483 is a prime.

It is a super-2 number, since 2×72136356136487² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72136356136483) 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, 23163128 + ... + 26092205.

It is an arithmetic number, because the mean of its divisors is an integer number (9491749138470).

Almost surely, 2^{72136356136487} is an apocalyptic number.

72136356136487 is a deficient number, since it is larger than the sum of its proper divisors (3797636971273).

72136356136487 is a wasteful number, since it uses less digits than its factorization.

72136356136487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49332433.

The product of its digits is 91445760, while the sum is 62.

The spelling of 72136356136487 in words is "seventy-two trillion, one hundred thirty-six billion, three hundred fifty-six million, one hundred thirty-six thousand, four hundred eighty-seven".