61156572111248 has 20 divisors (see below), whose sum is σ = 119822216428620. Its totient is φ = 30234709807104.

The previous prime is 61156572111241. The next prime is 61156572111269. The reversal of 61156572111248 is 84211127565116.

It can be written as a sum of positive squares in 2 ways, for example, as 6535426376704 + 54621145734544 = 2556448^2 + 7390612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61156572111196 and 61156572111205.

It is not an unprimeable number, because it can be changed into a prime (61156572111241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21473514065 + ... + 21473516912.

It is an arithmetic number, because the mean of its divisors is an integer number (5991110821431).

Almost surely, 2^{61156572111248} is an apocalyptic number.

It is an amenable number.

61156572111248 is a deficient number, since it is larger than the sum of its proper divisors (58665644317372).

61156572111248 is a wasteful number, since it uses less digits than its factorization.

61156572111248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42947031074 (or 42947031068 counting only the distinct ones).

The product of its digits is 806400, while the sum is 50.

The spelling of 61156572111248 in words is "sixty-one trillion, one hundred fifty-six billion, five hundred seventy-two million, one hundred eleven thousand, two hundred forty-eight".