90858056060861 has 16 divisors (see below), whose sum is σ = 95069172918720. Its totient is φ = 86758929653760.

The previous prime is 90858056060819. The next prime is 90858056060869. The reversal of 90858056060861 is 16806065085809.

It is a cyclic number.

It is not a de Polignac number, because 90858056060861 - 2¹⁸ = 90858055798717 is a prime.

It is a super-2 number, since 2×90858056060861² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90858056060794 and 90858056060803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90858056060869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98472260 + ... + 99390653.

It is an arithmetic number, because the mean of its divisors is an integer number (5941823307420).

Almost surely, 2^{90858056060861} is an apocalyptic number.

It is an amenable number.

90858056060861 is a deficient number, since it is larger than the sum of its proper divisors (4211116857859).

90858056060861 is a wasteful number, since it uses less digits than its factorization.

90858056060861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197863196.

The product of its (nonzero) digits is 24883200, while the sum is 62.

The spelling of 90858056060861 in words is "ninety trillion, eight hundred fifty-eight billion, fifty-six million, sixty thousand, eight hundred sixty-one".