61694350843632 has 40 divisors (see below), whose sum is σ = 171636847861584. Its totient is φ = 18982877182464.

The previous prime is 61694350843603. The next prime is 61694350843661. The reversal of 61694350843632 is 23634805349616.

It is an interprime number because it is at equal distance from previous prime (61694350843603) and next prime (61694350843661).

It is a super-2 number, since 2×61694350843632² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49434575373 + ... + 49434576620.

Almost surely, 2^{61694350843632} is an apocalyptic number.

It is an amenable number.

61694350843632 is an abundant number, since it is smaller than the sum of its proper divisors (109942497017952).

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

61694350843632 is a wasteful number, since it uses less digits than its factorization.

61694350843632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98869152017 (or 98869152011 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 60.

The spelling of 61694350843632 in words is "sixty-one trillion, six hundred ninety-four billion, three hundred fifty million, eight hundred forty-three thousand, six hundred thirty-two".