61361028868 has 12 divisors (see below), whose sum is σ = 110845729792. Its totient is φ = 29690820360.

The previous prime is 61361028823. The next prime is 61361028877. The reversal of 61361028868 is 86882016316.

It is a super-2 number, since 2×61361028868² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 247423380 + ... + 247423627.

Almost surely, 2^61361028868 is an apocalyptic number.

It is an amenable number.

61361028868 is a deficient number, since it is larger than the sum of its proper divisors (49484700924).

61361028868 is a wasteful number, since it uses less digits than its factorization.

61361028868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494847042 (or 494847040 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 61361028868 in words is "sixty-one billion, three hundred sixty-one million, twenty-eight thousand, eight hundred sixty-eight".