61337243185620 has 24 divisors (see below), whose sum is σ = 171744280919904. Its totient is φ = 16356598182816.

The previous prime is 61337243185597. The next prime is 61337243185637. The reversal of 61337243185620 is 2658134273316.

It is a happy number.

It is a super-2 number, since 2×61337243185620² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 511143693154 + ... + 511143693273.

It is an arithmetic number, because the mean of its divisors is an integer number (7156011704996).

Almost surely, 2^{61337243185620} is an apocalyptic number.

61337243185620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61337243185620 is an abundant number, since it is smaller than the sum of its proper divisors (110407037734284).

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

61337243185620 is a wasteful number, since it uses less digits than its factorization.

61337243185620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022287386439 (or 1022287386437 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 61337243185620 in words is "sixty-one trillion, three hundred thirty-seven billion, two hundred forty-three million, one hundred eighty-five thousand, six hundred twenty".