61261200112 has 40 divisors (see below), whose sum is σ = 136548180992. Its totient is φ = 26080920000.

The previous prime is 61261200103. The next prime is 61261200113. The reversal of 61261200112 is 21100216216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61261200113) 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, 1794264 + ... + 1828087.

Almost surely, 2^61261200112 is an apocalyptic number.

It is an amenable number.

61261200112 is an abundant number, since it is smaller than the sum of its proper divisors (75286980880).

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

61261200112 is a wasteful number, since it uses less digits than its factorization.

61261200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622517 (or 3622511 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 61261200112 its reverse (21100216216), we get a palindrome (82361416328).

The spelling of 61261200112 in words is "sixty-one billion, two hundred sixty-one million, two hundred thousand, one hundred twelve".