23558674778 has 16 divisors (see below), whose sum is σ = 35466114816. Its totient is φ = 11736696720.

The previous prime is 23558674771. The next prime is 23558674787. The reversal of 23558674778 is 87747685532.

It is a super-2 number, since 2×23558674778² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23558674778.

It is not an unprimeable number, because it can be changed into a prime (23558674771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808523 + ... + 837153.

It is an arithmetic number, because the mean of its divisors is an integer number (2216632176).

Almost surely, 2^23558674778 is an apocalyptic number.

23558674778 is a deficient number, since it is larger than the sum of its proper divisors (11907440038).

23558674778 is a wasteful number, since it uses less digits than its factorization.

23558674778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30109.

The product of its digits is 79027200, while the sum is 62.

The spelling of 23558674778 in words is "twenty-three billion, five hundred fifty-eight million, six hundred seventy-four thousand, seven hundred seventy-eight".