669900031511769 has 6 divisors (see below), whose sum is σ = 967633378850346. Its totient is φ = 446600021007840.

The previous prime is 669900031511717. The next prime is 669900031511813. The reversal of 669900031511769 is 967115130009966.

669900031511769 is a `hidden beast` number, since 6 + 69 + 90 + 0 + 0 + 315 + 1 + 176 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 590971821447744 + 78928210064025 = 24309912^2 + 8884155^2 .

It is not a de Polignac number, because 669900031511769 - 2²¹ = 669900029414617 is a prime.

It is a super-2 number, since 2×669900031511769² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (669900031511369) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37216668417312 + ... + 37216668417329.

It is an arithmetic number, because the mean of its divisors is an integer number (161272229808391).

Almost surely, 2^{669900031511769} is an apocalyptic number.

It is an amenable number.

669900031511769 is a deficient number, since it is larger than the sum of its proper divisors (297733347338577).

669900031511769 is a wasteful number, since it uses less digits than its factorization.

669900031511769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74433336834647 (or 74433336834644 counting only the distinct ones).

The product of its (nonzero) digits is 16533720, while the sum is 63.

The spelling of 669900031511769 in words is "six hundred sixty-nine trillion, nine hundred billion, thirty-one million, five hundred eleven thousand, seven hundred sixty-nine".