61697063286 has 16 divisors (see below), whose sum is σ = 137104585200. Its totient is φ = 20565687744.

The previous prime is 61697063251. The next prime is 61697063327. The reversal of 61697063286 is 68236079616.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1142538209 = 61697063286 / (6 + 1 + 6 + 9 + 7 + 0 + 6 + 3 + 2 + 8 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571269051 + ... + 571269158.

It is an arithmetic number, because the mean of its divisors is an integer number (8569036575).

Almost surely, 2^61697063286 is an apocalyptic number.

61697063286 is an abundant number, since it is smaller than the sum of its proper divisors (75407521914).

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

61697063286 is a wasteful number, since it uses less digits than its factorization.

61697063286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142538220 (or 1142538214 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 61697063286 in words is "sixty-one billion, six hundred ninety-seven million, sixty-three thousand, two hundred eighty-six".