90155336797 has 8 divisors (see below), whose sum is σ = 91062470232. Its totient is φ = 89248488000.

The previous prime is 90155336767. The next prime is 90155336809. The reversal of 90155336797 is 79763355109.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 49068452196 + 41086884601 = 221514^2 + 202699^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90155336797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90155336767) 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, 596863 + ... + 732499.

It is an arithmetic number, because the mean of its divisors is an integer number (11382808779).

Almost surely, 2^90155336797 is an apocalyptic number.

It is an amenable number.

90155336797 is a deficient number, since it is larger than the sum of its proper divisors (907133435).

90155336797 is a wasteful number, since it uses less digits than its factorization.

90155336797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142319.

The product of its (nonzero) digits is 5358150, while the sum is 55.

The spelling of 90155336797 in words is "ninety billion, one hundred fifty-five million, three hundred thirty-six thousand, seven hundred ninety-seven".