85792721455 has 8 divisors (see below), whose sum is σ = 117658589472. Its totient is φ = 58829294688.

The previous prime is 85792721453. The next prime is 85792721549. The reversal of 85792721455 is 55412729758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85792721455 - 2¹ = 85792721453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85792721396 and 85792721405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85792721453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225610272 + ... + 1225610341.

It is an arithmetic number, because the mean of its divisors is an integer number (14707323684).

Almost surely, 2^85792721455 is an apocalyptic number.

85792721455 is a deficient number, since it is larger than the sum of its proper divisors (31865868017).

85792721455 is a wasteful number, since it uses less digits than its factorization.

85792721455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451220625.

The product of its digits is 7056000, while the sum is 55.

The spelling of 85792721455 in words is "eighty-five billion, seven hundred ninety-two million, seven hundred twenty-one thousand, four hundred fifty-five".