998261107215 has 32 divisors (see below), whose sum is σ = 1616612437440. Its totient is φ = 525951765504.

The previous prime is 998261107201. The next prime is 998261107223. The reversal of 998261107215 is 512701162899.

It is not a de Polignac number, because 998261107215 - 2¹⁷ = 998260976143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1156477 + ... + 1825913.

It is an arithmetic number, because the mean of its divisors is an integer number (50519138670).

Almost surely, 2^998261107215 is an apocalyptic number.

998261107215 is a deficient number, since it is larger than the sum of its proper divisors (618351330225).

998261107215 is a wasteful number, since it uses less digits than its factorization.

998261107215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670651.

The product of its (nonzero) digits is 544320, while the sum is 51.

The spelling of 998261107215 in words is "nine hundred ninety-eight billion, two hundred sixty-one million, one hundred seven thousand, two hundred fifteen".