61378550538038 has 8 divisors (see below), whose sum is σ = 92068976938032. Its totient is φ = 30688891558696.

The previous prime is 61378550537897. The next prime is 61378550538049. The reversal of 61378550538038 is 83083505587316.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191655170 + ... + 191975157.

It is an arithmetic number, because the mean of its divisors is an integer number (11508622117254).

Almost surely, 2^{61378550538038} is an apocalyptic number.

61378550538038 is a deficient number, since it is larger than the sum of its proper divisors (30690426399994).

61378550538038 is a wasteful number, since it uses less digits than its factorization.

61378550538038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383710326.

The product of its (nonzero) digits is 72576000, while the sum is 62.

The spelling of 61378550538038 in words is "sixty-one trillion, three hundred seventy-eight billion, five hundred fifty million, five hundred thirty-eight thousand, thirty-eight".