61649314539268 has 24 divisors (see below), whose sum is σ = 108901788055200. Its totient is φ = 30534556071168.

The previous prime is 61649314539259. The next prime is 61649314539277. The reversal of 61649314539268 is 86293541394616.

It is an interprime number because it is at equal distance from previous prime (61649314539259) and next prime (61649314539277).

It is a super-2 number, since 2×61649314539268² (a number of 28 digits) contains 22 as substring.

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, 1722228 + ... + 11236756.

It is an arithmetic number, because the mean of its divisors is an integer number (4537574502300).

Almost surely, 2^{61649314539268} is an apocalyptic number.

It is an amenable number.

61649314539268 is a deficient number, since it is larger than the sum of its proper divisors (47252473515932).

61649314539268 is a wasteful number, since it uses less digits than its factorization.

61649314539268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9529779 (or 9529777 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 67.

The spelling of 61649314539268 in words is "sixty-one trillion, six hundred forty-nine billion, three hundred fourteen million, five hundred thirty-nine thousand, two hundred sixty-eight".