61651748787254 has 8 divisors (see below), whose sum is σ = 92627505878328. Its totient is φ = 30775913494480.

The previous prime is 61651748787221. The next prime is 61651748787259. The reversal of 61651748787254 is 45278784715616.

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 (61651748787259) by changing a digit.

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, 24980448032 + ... + 24980450499.

It is an arithmetic number, because the mean of its divisors is an integer number (11578438234791).

Almost surely, 2^{61651748787254} is an apocalyptic number.

61651748787254 is a deficient number, since it is larger than the sum of its proper divisors (30975757091074).

61651748787254 is a wasteful number, since it uses less digits than its factorization.

61651748787254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49960899150.

The product of its digits is 632217600, while the sum is 71.

The spelling of 61651748787254 in words is "sixty-one trillion, six hundred fifty-one billion, seven hundred forty-eight million, seven hundred eighty-seven thousand, two hundred fifty-four".