61369277956 has 18 divisors (see below), whose sum is σ = 124930316238. Its totient is φ = 26301119040.

The previous prime is 61369277939. The next prime is 61369277989. The reversal of 61369277956 is 65977296316.

It can be written as a sum of positive squares in only one way, i.e., 37023917056 + 24345360900 = 192416^2 + 156030^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61369277894 and 61369277903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156554085 + ... + 156554476.

Almost surely, 2^61369277956 is an apocalyptic number.

It is an amenable number.

61369277956 is an abundant number, since it is smaller than the sum of its proper divisors (63561038282).

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

61369277956 is a wasteful number, since it uses less digits than its factorization.

61369277956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313108579 (or 313108570 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 61.

The spelling of 61369277956 in words is "sixty-one billion, three hundred sixty-nine million, two hundred seventy-seven thousand, nine hundred fifty-six".