11954379457 has 4 divisors (see below), whose sum is σ = 11985592320. Its totient is φ = 11923166596.

The previous prime is 11954379427. The next prime is 11954379491. The reversal of 11954379457 is 75497345911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11954379457 - 2¹⁵ = 11954346689 is a prime.

It is a super-2 number, since 2×11954379457² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11954379398 and 11954379407.

It is not an unprimeable number, because it can be changed into a prime (11954379427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15605857 + ... + 15606622.

It is an arithmetic number, because the mean of its divisors is an integer number (2996398080).

Almost surely, 2^11954379457 is an apocalyptic number.

It is an amenable number.

11954379457 is a deficient number, since it is larger than the sum of its proper divisors (31212863).

11954379457 is an equidigital number, since it uses as much as digits as its factorization.

11954379457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31212862.

The product of its digits is 4762800, while the sum is 55.

The spelling of 11954379457 in words is "eleven billion, nine hundred fifty-four million, three hundred seventy-nine thousand, four hundred fifty-seven".