11961951079 has 8 divisors (see below), whose sum is σ = 12906834192. Its totient is φ = 11020601280.

The previous prime is 11961951037. The next prime is 11961951083. The reversal of 11961951079 is 97015916911.

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

It is not a de Polignac number, because 11961951079 - 2¹¹ = 11961949031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11961951479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876289 + ... + 889834.

It is an arithmetic number, because the mean of its divisors is an integer number (1613354274).

Almost surely, 2^11961951079 is an apocalyptic number.

11961951079 is a deficient number, since it is larger than the sum of its proper divisors (944883113).

11961951079 is a wasteful number, since it uses less digits than its factorization.

11961951079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766657.

The product of its (nonzero) digits is 153090, while the sum is 49.

The spelling of 11961951079 in words is "eleven billion, nine hundred sixty-one million, nine hundred fifty-one thousand, seventy-nine".