98877221655 has 16 divisors (see below), whose sum is σ = 158208073440. Its totient is φ = 52733011968.

The previous prime is 98877221633. The next prime is 98877221659. The reversal of 98877221655 is 55612277889.

It is not a de Polignac number, because 98877221655 - 2¹² = 98877217559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98877221659) 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, 626439 + ... + 768231.

It is an arithmetic number, because the mean of its divisors is an integer number (9888004590).

Almost surely, 2^98877221655 is an apocalyptic number.

98877221655 is a deficient number, since it is larger than the sum of its proper divisors (59330851785).

98877221655 is a wasteful number, since it uses less digits than its factorization.

98877221655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188290.

The product of its digits is 16934400, while the sum is 60.

The spelling of 98877221655 in words is "ninety-eight billion, eight hundred seventy-seven million, two hundred twenty-one thousand, six hundred fifty-five".