11977551407 has 2 divisors, whose sum is σ = 11977551408. Its totient is φ = 11977551406.

The previous prime is 11977551353. The next prime is 11977551413. The reversal of 11977551407 is 70415577911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11977551407 - 2⁶ = 11977551343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11977551457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5988775703 + 5988775704.

It is an arithmetic number, because the mean of its divisors is an integer number (5988775704).

Almost surely, 2^11977551407 is an apocalyptic number.

11977551407 is a deficient number, since it is larger than the sum of its proper divisors (1).

11977551407 is an equidigital number, since it uses as much as digits as its factorization.

11977551407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 308700, while the sum is 47.

The spelling of 11977551407 in words is "eleven billion, nine hundred seventy-seven million, five hundred fifty-one thousand, four hundred seven".