72050001155 has 24 divisors (see below), whose sum is σ = 95063365152. Its totient is φ = 52384112000.

The previous prime is 72050001083. The next prime is 72050001217. The reversal of 72050001155 is 55110005027.

It is a happy number.

It is not a de Polignac number, because 72050001155 - 2¹² = 72049997059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2204735 + ... + 2237175.

It is an arithmetic number, because the mean of its divisors is an integer number (3960973548).

Almost surely, 2^72050001155 is an apocalyptic number.

72050001155 is a deficient number, since it is larger than the sum of its proper divisors (23013363997).

72050001155 is a wasteful number, since it uses less digits than its factorization.

72050001155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36139 (or 36128 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 26.

The spelling of 72050001155 in words is "seventy-two billion, fifty million, one thousand, one hundred fifty-five".