61117213571754 has 16 divisors (see below), whose sum is σ = 122524770205920. Its totient is φ = 20324014013520.

The previous prime is 61117213571731. The next prime is 61117213571759. The reversal of 61117213571754 is 45717531271116.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61117213571697 and 61117213571706.

It is not an unprimeable number, because it can be changed into a prime (61117213571759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12097624864 + ... + 12097629915.

It is an arithmetic number, because the mean of its divisors is an integer number (7657798137870).

Almost surely, 2^{61117213571754} is an apocalyptic number.

61117213571754 is an abundant number, since it is smaller than the sum of its proper divisors (61407556634166).

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

61117213571754 is a wasteful number, since it uses less digits than its factorization.

61117213571754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24195255205.

The product of its digits is 1234800, while the sum is 51.

The spelling of 61117213571754 in words is "sixty-one trillion, one hundred seventeen billion, two hundred thirteen million, five hundred seventy-one thousand, seven hundred fifty-four".