11213137761 has 16 divisors (see below), whose sum is σ = 17409078144. Its totient is φ = 6286610304.

The previous prime is 11213137739. The next prime is 11213137781. The reversal of 11213137761 is 16773131211.

It is not a de Polignac number, because 11213137761 - 2²⁵ = 11179583329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11213137711) 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, 5036236 + ... + 5038461.

It is an arithmetic number, because the mean of its divisors is an integer number (1088067384).

Almost surely, 2^11213137761 is an apocalyptic number.

It is an amenable number.

11213137761 is a deficient number, since it is larger than the sum of its proper divisors (6195940383).

11213137761 is a wasteful number, since it uses less digits than its factorization.

11213137761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10074760.

The product of its digits is 5292, while the sum is 33.

Adding to 11213137761 its reverse (16773131211), we get a palindrome (27986268972).

The spelling of 11213137761 in words is "eleven billion, two hundred thirteen million, one hundred thirty-seven thousand, seven hundred sixty-one".