61377540618734 has 8 divisors (see below), whose sum is σ = 93440434972008. Its totient is φ = 30230728961400.

The previous prime is 61377540618733. The next prime is 61377540618761. The reversal of 61377540618734 is 43781604577316.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61377540618733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229020673817 + ... + 229020674084.

It is an arithmetic number, because the mean of its divisors is an integer number (11680054371501).

Almost surely, 2^{61377540618734} is an apocalyptic number.

61377540618734 is a deficient number, since it is larger than the sum of its proper divisors (32062894353274).

61377540618734 is a wasteful number, since it uses less digits than its factorization.

61377540618734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458041347970.

The product of its (nonzero) digits is 71124480, while the sum is 62.

The spelling of 61377540618734 in words is "sixty-one trillion, three hundred seventy-seven billion, five hundred forty million, six hundred eighteen thousand, seven hundred thirty-four".