72858001573 has 4 divisors (see below), whose sum is σ = 83266287520. Its totient is φ = 62449715628.

The previous prime is 72858001543. The next prime is 72858001591. The reversal of 72858001573 is 37510085827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37510085827 = 79 ⋅474811213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72858001573 is a prime.

It is a super-2 number, since 2×72858001573² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72858001543) 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, 5204142963 + ... + 5204142976.

It is an arithmetic number, because the mean of its divisors is an integer number (20816571880).

Almost surely, 2^72858001573 is an apocalyptic number.

It is an amenable number.

72858001573 is a deficient number, since it is larger than the sum of its proper divisors (10408285947).

72858001573 is a wasteful number, since it uses less digits than its factorization.

72858001573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10408285946.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 72858001573 in words is "seventy-two billion, eight hundred fifty-eight million, one thousand, five hundred seventy-three".