61140550530 has 16 divisors (see below), whose sum is σ = 146737321344. Its totient is φ = 16304146800.

The previous prime is 61140550477. The next prime is 61140550531. The reversal of 61140550530 is 3505504116.

It is a super-2 number, since 2×61140550530² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2038018351 = 61140550530 / (6 + 1 + 1 + 4 + 0 + 5 + 5 + 0 + 5 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (61140550531) 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, 1019009146 + ... + 1019009205.

It is an arithmetic number, because the mean of its divisors is an integer number (9171082584).

Almost surely, 2^61140550530 is an apocalyptic number.

61140550530 is an abundant number, since it is smaller than the sum of its proper divisors (85596770814).

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

61140550530 is a wasteful number, since it uses less digits than its factorization.

61140550530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038018361.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 61140550530 in words is "sixty-one billion, one hundred forty million, five hundred fifty thousand, five hundred thirty".