72508478151 has 4 divisors (see below), whose sum is σ = 96677970872. Its totient is φ = 48338985432.

The previous prime is 72508478137. The next prime is 72508478153. The reversal of 72508478151 is 15187480527.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72508478151 - 2³⁰ = 71434736327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72508478151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72508478153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12084746356 + ... + 12084746361.

It is an arithmetic number, because the mean of its divisors is an integer number (24169492718).

Almost surely, 2^72508478151 is an apocalyptic number.

72508478151 is a deficient number, since it is larger than the sum of its proper divisors (24169492721).

72508478151 is a wasteful number, since it uses less digits than its factorization.

72508478151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24169492720.

The product of its (nonzero) digits is 627200, while the sum is 48.

The spelling of 72508478151 in words is "seventy-two billion, five hundred eight million, four hundred seventy-eight thousand, one hundred fifty-one".