90851635154881 has 8 divisors (see below), whose sum is σ = 90916447066560. Its totient is φ = 90786828547632.

The previous prime is 90851635154879. The next prime is 90851635154941. The reversal of 90851635154881 is 18845153615809.

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 90851635154881 - 2¹ = 90851635154879 is a prime.

It is a super-2 number, since 2×90851635154881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90851635184881) 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, 33262606 + ... + 35890168.

It is an arithmetic number, because the mean of its divisors is an integer number (11364555883320).

Almost surely, 2^{90851635154881} is an apocalyptic number.

It is an amenable number.

90851635154881 is a deficient number, since it is larger than the sum of its proper divisors (64811911679).

90851635154881 is a wasteful number, since it uses less digits than its factorization.

90851635154881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652215.

The product of its (nonzero) digits is 41472000, while the sum is 64.

The spelling of 90851635154881 in words is "ninety trillion, eight hundred fifty-one billion, six hundred thirty-five million, one hundred fifty-four thousand, eight hundred eighty-one".