11161263498 has 192 divisors, whose sum is σ = 30035183616. Its totient is φ = 2681078400.

The previous prime is 11161263497. The next prime is 11161263511. The reversal of 11161263498 is 89436216111.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (11161263497) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10211040 + ... + 10212132.

It is an arithmetic number, because the mean of its divisors is an integer number (156433248).

Almost surely, 2^11161263498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11161263498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15017591808).

11161263498 is an abundant number, since it is smaller than the sum of its proper divisors (18873920118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11161263498 is a wasteful number, since it uses less digits than its factorization.

11161263498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1170 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The spelling of 11161263498 in words is "eleven billion, one hundred sixty-one million, two hundred sixty-three thousand, four hundred ninety-eight".