61140440311140 has 48 divisors (see below), whose sum is σ = 171273643390080. Its totient is φ = 16296459271680.

The previous prime is 61140440311117. The next prime is 61140440311169. The reversal of 61140440311140 is 4111304404116.

It is a super-3 number, since 3×61140440311140³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 61140440311098 and 61140440311107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239188216 + ... + 239443695.

It is an arithmetic number, because the mean of its divisors is an integer number (3568200903960).

Almost surely, 2^{61140440311140} is an apocalyptic number.

61140440311140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61140440311140 is an abundant number, since it is smaller than the sum of its proper divisors (110133203078940).

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

61140440311140 is a wasteful number, since it uses less digits than its factorization.

61140440311140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478634052 (or 478634050 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 61140440311140 its reverse (4111304404116), we get a palindrome (65251744715256).

The spelling of 61140440311140 in words is "sixty-one trillion, one hundred forty billion, four hundred forty million, three hundred eleven thousand, one hundred forty".