19769770157 has 8 divisors (see below), whose sum is σ = 20061789120. Its totient is φ = 19478128320.

The previous prime is 19769770133. The next prime is 19769770159. The reversal of 19769770157 is 75107796791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19769770157 - 2¹² = 19769766061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19769770096 and 19769770105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19769770159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12218 + ... + 199220.

It is an arithmetic number, because the mean of its divisors is an integer number (2507723640).

Almost surely, 2^19769770157 is an apocalyptic number.

It is an amenable number.

19769770157 is a deficient number, since it is larger than the sum of its proper divisors (292018963).

19769770157 is a wasteful number, since it uses less digits than its factorization.

19769770157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188563.

The product of its (nonzero) digits is 5834430, while the sum is 59.

The spelling of 19769770157 in words is "nineteen billion, seven hundred sixty-nine million, seven hundred seventy thousand, one hundred fifty-seven".