18969608061 has 24 divisors (see below), whose sum is σ = 27542301696. Its totient is φ = 12581059680.

The previous prime is 18969608057. The next prime is 18969608089. The reversal of 18969608061 is 16080696981.

It is not a de Polignac number, because 18969608061 - 2² = 18969608057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18969607989 and 18969608007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18969608461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4439356 + ... + 4443626.

It is an arithmetic number, because the mean of its divisors is an integer number (1147595904).

Almost surely, 2^18969608061 is an apocalyptic number.

It is an amenable number.

18969608061 is a deficient number, since it is larger than the sum of its proper divisors (8572693635).

18969608061 is a wasteful number, since it uses less digits than its factorization.

18969608061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713 (or 6710 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 18969608061 in words is "eighteen billion, nine hundred sixty-nine million, six hundred eight thousand, sixty-one".