11451115642 has 8 divisors (see below), whose sum is σ = 17231551956. Its totient is φ = 5707264992.

The previous prime is 11451115633. The next prime is 11451115651. The reversal of 11451115642 is 24651115411.

It is an interprime number because it is at equal distance from previous prime (11451115633) and next prime (11451115651).

It can be written as a sum of positive squares in 2 ways, for example, as 11449214001 + 1901641 = 107001^2 + 1379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11451115642² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9145633 + ... + 9146884.

Almost surely, 2^11451115642 is an apocalyptic number.

11451115642 is a deficient number, since it is larger than the sum of its proper divisors (5780436314).

11451115642 is a wasteful number, since it uses less digits than its factorization.

11451115642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18292832.

The product of its digits is 4800, while the sum is 31.

The spelling of 11451115642 in words is "eleven billion, four hundred fifty-one million, one hundred fifteen thousand, six hundred forty-two".