61155106066056 has 32 divisors (see below), whose sum is σ = 157019866928640. Its totient is φ = 19834088453568.

The previous prime is 61155106065959. The next prime is 61155106066091. The reversal of 61155106066056 is 65066060155116.

It is a junction number, because it is equal to n+sod(n) for n = 61155106065996 and 61155106066014.

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, 34434180456 + ... + 34434182231.

It is an arithmetic number, because the mean of its divisors is an integer number (4906870841520).

Almost surely, 2^{61155106066056} is an apocalyptic number.

It is an amenable number.

61155106066056 is an abundant number, since it is smaller than the sum of its proper divisors (95864760862584).

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

61155106066056 is a wasteful number, since it uses less digits than its factorization.

61155106066056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68868362733 (or 68868362729 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 61155106066056 in words is "sixty-one trillion, one hundred fifty-five billion, one hundred six million, sixty-six thousand, fifty-six".