72127501757 has 32 divisors (see below), whose sum is σ = 83721600000. Its totient is φ = 61676246016.

The previous prime is 72127501703. The next prime is 72127501769. The reversal of 72127501757 is 75710572127.

It is not a de Polignac number, because 72127501757 - 2¹² = 72127497661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72127501657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1369844 + ... + 1421522.

It is an arithmetic number, because the mean of its divisors is an integer number (2616300000).

Almost surely, 2^72127501757 is an apocalyptic number.

It is an amenable number.

72127501757 is a deficient number, since it is larger than the sum of its proper divisors (11594098243).

72127501757 is a wasteful number, since it uses less digits than its factorization.

72127501757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51893.

The product of its (nonzero) digits is 240100, while the sum is 44.

The spelling of 72127501757 in words is "seventy-two billion, one hundred twenty-seven million, five hundred one thousand, seven hundred fifty-seven".