986990522403901 has 8 divisors (see below), whose sum is σ = 987044713906680. Its totient is φ = 986936332069632.

The previous prime is 986990522403881. The next prime is 986990522403953. The reversal of 986990522403901 is 109304225099689.

It can be written as a sum of positive squares in 4 ways, for example, as 263197052775801 + 723793469628100 = 16223349^2 + 26903410^2 .

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 986990522403901 - 2¹⁹ = 986990521879613 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 (986990522403961) 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, 2080208571 + ... + 2080682983.

It is an arithmetic number, because the mean of its divisors is an integer number (123380589238335).

Almost surely, 2^{986990522403901} is an apocalyptic number.

It is an amenable number.

986990522403901 is a deficient number, since it is larger than the sum of its proper divisors (54191502779).

986990522403901 is a wasteful number, since it uses less digits than its factorization.

986990522403901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584255.

The product of its (nonzero) digits is 75582720, while the sum is 67.

The spelling of 986990522403901 in words is "nine hundred eighty-six trillion, nine hundred ninety billion, five hundred twenty-two million, four hundred three thousand, nine hundred one".