61121285130280 has 64 divisors (see below), whose sum is σ = 137794434673680. Its totient is φ = 24400286208000.

The previous prime is 61121285130263. The next prime is 61121285130289. The reversal of 61121285130280 is 8203158212116.

61121285130280 is digitally balanced in base 5 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 21391383506724 + 39729901623556 = 4625082^2 + 6303166^2 .

It is a super-2 number, since 2×61121285130280² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (61121285130289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41405710 + ... + 42856450.

Almost surely, 2^{61121285130280} is an apocalyptic number.

It is an amenable number.

61121285130280 is an abundant number, since it is smaller than the sum of its proper divisors (76673149543400).

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

61121285130280 is a wasteful number, since it uses less digits than its factorization.

61121285130280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452830 (or 1452826 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 61121285130280 in words is "sixty-one trillion, one hundred twenty-one billion, two hundred eighty-five million, one hundred thirty thousand, two hundred eighty".