90970724135 has 4 divisors (see below), whose sum is σ = 109164868968. Its totient is φ = 72776579304.

The previous prime is 90970724129. The next prime is 90970724161. The reversal of 90970724135 is 53142707909.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90970724135 - 2¹² = 90970720039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90970724135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9097072409 + ... + 9097072418.

It is an arithmetic number, because the mean of its divisors is an integer number (27291217242).

Almost surely, 2^90970724135 is an apocalyptic number.

90970724135 is a deficient number, since it is larger than the sum of its proper divisors (18194144833).

90970724135 is a wasteful number, since it uses less digits than its factorization.

90970724135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18194144832.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 90970724135 in words is "ninety billion, nine hundred seventy million, seven hundred twenty-four thousand, one hundred thirty-five".