15577679055 has 16 divisors (see below), whose sum is σ = 26236091520. Its totient is φ = 7870827168.

The previous prime is 15577679041. The next prime is 15577679077. The reversal of 15577679055 is 55097677551.

It is a happy number.

It is not a de Polignac number, because 15577679055 - 2¹⁹ = 15577154767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 15577678986 and 15577679004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27328977 + ... + 27329546.

It is an arithmetic number, because the mean of its divisors is an integer number (1639755720).

Almost surely, 2^15577679055 is an apocalyptic number.

15577679055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15577679055 is a deficient number, since it is larger than the sum of its proper divisors (10658412465).

15577679055 is a wasteful number, since it uses less digits than its factorization.

15577679055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54658550.

The product of its (nonzero) digits is 11576250, while the sum is 57.

The spelling of 15577679055 in words is "fifteen billion, five hundred seventy-seven million, six hundred seventy-nine thousand, fifty-five".