61377966946 has 8 divisors (see below), whose sum is σ = 92068673580. Its totient is φ = 30688409088.

The previous prime is 61377966941. The next prime is 61377966961. The reversal of 61377966946 is 64966977316.

61377966946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39676257721 + 21701709225 = 199189^2 + 147315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61377966941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138151 + ... + 376618.

Almost surely, 2^61377966946 is an apocalyptic number.

61377966946 is a deficient number, since it is larger than the sum of its proper divisors (30690706634).

61377966946 is a wasteful number, since it uses less digits than its factorization.

61377966946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574388.

The product of its digits is 61725888, while the sum is 64.

The spelling of 61377966946 in words is "sixty-one billion, three hundred seventy-seven million, nine hundred sixty-six thousand, nine hundred forty-six".