72087114991 has 4 divisors (see below), whose sum is σ = 72449362000. Its totient is φ = 71724867984.

The previous prime is 72087114989. The next prime is 72087115003. The reversal of 72087114991 is 19941178027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19941178027 = 5669 ⋅3517583.

It is a cyclic number.

It is not a de Polignac number, because 72087114991 - 2¹ = 72087114989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72087114971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181123206 + ... + 181123603.

It is an arithmetic number, because the mean of its divisors is an integer number (18112340500).

Almost surely, 2^72087114991 is an apocalyptic number.

72087114991 is a deficient number, since it is larger than the sum of its proper divisors (362247009).

72087114991 is a wasteful number, since it uses less digits than its factorization.

72087114991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362247008.

The product of its (nonzero) digits is 254016, while the sum is 49.

The spelling of 72087114991 in words is "seventy-two billion, eighty-seven million, one hundred fourteen thousand, nine hundred ninety-one".