61140418390 has 8 divisors (see below), whose sum is σ = 110052753120. Its totient is φ = 24456167352.

The previous prime is 61140418303. The next prime is 61140418393. The reversal of 61140418390 is 9381404116.

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

It is a super-4 number, since 4×61140418390⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61140418393) 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, 3057020910 + ... + 3057020929.

It is an arithmetic number, because the mean of its divisors is an integer number (13756594140).

Almost surely, 2^61140418390 is an apocalyptic number.

61140418390 is a deficient number, since it is larger than the sum of its proper divisors (48912334730).

61140418390 is a wasteful number, since it uses less digits than its factorization.

61140418390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6114041846.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 61140418390 in words is "sixty-one billion, one hundred forty million, four hundred eighteen thousand, three hundred ninety".