61697464614 has 80 divisors (see below), whose sum is σ = 143068185216. Its totient is φ = 19852128000.

The previous prime is 61697464607. The next prime is 61697464663. The reversal of 61697464614 is 41646479616.

61697464614 is a `hidden beast` number, since 6 + 16 + 9 + 7 + 4 + 6 + 4 + 614 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1998504 + ... + 2029140.

Almost surely, 2^61697464614 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61697464614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71534092608).

61697464614 is an abundant number, since it is smaller than the sum of its proper divisors (81370720602).

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

61697464614 is a wasteful number, since it uses less digits than its factorization.

61697464614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31083 (or 31074 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The spelling of 61697464614 in words is "sixty-one billion, six hundred ninety-seven million, four hundred sixty-four thousand, six hundred fourteen".