19825264677 has 16 divisors (see below), whose sum is σ = 28722513920. Its totient is φ = 12117308400.

The previous prime is 19825264673. The next prime is 19825264703. The reversal of 19825264677 is 77646252891.

It is a happy number.

It is not a de Polignac number, because 19825264677 - 2² = 19825264673 is a prime.

It is a super-2 number, since 2×19825264677² (a number of 21 digits) contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19825264673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5608099 + ... + 5611632.

It is an arithmetic number, because the mean of its divisors is an integer number (1795157120).

Almost surely, 2^19825264677 is an apocalyptic number.

It is an amenable number.

19825264677 is a deficient number, since it is larger than the sum of its proper divisors (8897249243).

19825264677 is a wasteful number, since it uses less digits than its factorization.

19825264677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11219784.

The product of its digits is 10160640, while the sum is 57.

The spelling of 19825264677 in words is "nineteen billion, eight hundred twenty-five million, two hundred sixty-four thousand, six hundred seventy-seven".