11411771638 has 32 divisors (see below), whose sum is σ = 17862576192. Its totient is φ = 5464368000.

The previous prime is 11411771587. The next prime is 11411771689. The reversal of 11411771638 is 83617711411.

It is an interprime number because it is at equal distance from previous prime (11411771587) and next prime (11411771689).

It is a super-2 number, since 2×11411771638² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11411771638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752620 + ... + 767632.

It is an arithmetic number, because the mean of its divisors is an integer number (558205506).

Almost surely, 2^11411771638 is an apocalyptic number.

11411771638 is a deficient number, since it is larger than the sum of its proper divisors (6450804554).

11411771638 is a wasteful number, since it uses less digits than its factorization.

11411771638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15240.

The product of its digits is 28224, while the sum is 40.

The spelling of 11411771638 in words is "eleven billion, four hundred eleven million, seven hundred seventy-one thousand, six hundred thirty-eight".