20677523394 has 16 divisors (see below), whose sum is σ = 45114596640. Its totient is φ = 6265916160.

The previous prime is 20677523393. The next prime is 20677523401. The reversal of 20677523394 is 49332577602.

It is not an unprimeable number, because it can be changed into a prime (20677523393) 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, 156647839 + ... + 156647970.

It is an arithmetic number, because the mean of its divisors is an integer number (2819662290).

Almost surely, 2^20677523394 is an apocalyptic number.

20677523394 is an abundant number, since it is smaller than the sum of its proper divisors (24437073246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20677523394 is a wasteful number, since it uses less digits than its factorization.

20677523394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313295825.

The product of its (nonzero) digits is 1905120, while the sum is 48.

The spelling of 20677523394 in words is "twenty billion, six hundred seventy-seven million, five hundred twenty-three thousand, three hundred ninety-four".