61507007228 has 24 divisors (see below), whose sum is σ = 110311740000. Its totient is φ = 29990036480.

The previous prime is 61507007227. The next prime is 61507007257. The reversal of 61507007228 is 82270070516.

It is a super-2 number, since 2×61507007228² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61507007191 and 61507007200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61507007227) 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, 290273 + ... + 455271.

It is an arithmetic number, because the mean of its divisors is an integer number (4596322500).

Almost surely, 2^61507007228 is an apocalyptic number.

It is an amenable number.

61507007228 is a deficient number, since it is larger than the sum of its proper divisors (48804732772).

61507007228 is a wasteful number, since it uses less digits than its factorization.

61507007228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167317 (or 167315 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 61507007228 in words is "sixty-one billion, five hundred seven million, seven thousand, two hundred twenty-eight".