61254102811 has 8 divisors (see below), whose sum is σ = 67060464048. Its totient is φ = 55487376000.

The previous prime is 61254102809. The next prime is 61254102821. The reversal of 61254102811 is 11820145216.

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

It is a cyclic number.

It is not a de Polignac number, because 61254102811 - 2¹ = 61254102809 is a prime.

It is a super-2 number, since 2×61254102811² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61254102821) 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 7 ways as a sum of consecutive naturals, for example, 9905370 + ... + 9911551.

It is an arithmetic number, because the mean of its divisors is an integer number (8382558006).

Almost surely, 2^61254102811 is an apocalyptic number.

61254102811 is a deficient number, since it is larger than the sum of its proper divisors (5806361237).

61254102811 is a wasteful number, since it uses less digits than its factorization.

61254102811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19817213.

The product of its (nonzero) digits is 3840, while the sum is 31.

The spelling of 61254102811 in words is "sixty-one billion, two hundred fifty-four million, one hundred two thousand, eight hundred eleven".