61261401412 has 6 divisors (see below), whose sum is σ = 107207452478. Its totient is φ = 30630700704.

The previous prime is 61261401407. The next prime is 61261401419. The reversal of 61261401412 is 21410416216.

61261401412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 31671897156 + 29589504256 = 177966^2 + 172016^2 .

It is not an unprimeable number, because it can be changed into a prime (61261401419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7657675173 + ... + 7657675180.

Almost surely, 2^61261401412 is an apocalyptic number.

It is an amenable number.

61261401412 is a deficient number, since it is larger than the sum of its proper divisors (45946051066).

61261401412 is a wasteful number, since it uses less digits than its factorization.

61261401412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15315350357 (or 15315350355 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 61261401412 its reverse (21410416216), we get a palindrome (82671817628).

The spelling of 61261401412 in words is "sixty-one billion, two hundred sixty-one million, four hundred one thousand, four hundred twelve".