61071102720 has 108 divisors (see below), whose sum is σ = 211299693696. Its totient is φ = 16285624320.

The previous prime is 61071102619. The next prime is 61071102727. The reversal of 61071102720 is 2720117016.

61071102720 is a `hidden beast` number, since 610 + 7 + 1 + 1 + 0 + 27 + 20 = 666.

It is not an unprimeable number, because it can be changed into a prime (61071102727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2639136 + ... + 2662175.

Almost surely, 2^61071102720 is an apocalyptic number.

61071102720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61071102720 is an abundant number, since it is smaller than the sum of its proper divisors (150228590976).

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

61071102720 is a wasteful number, since it uses less digits than its factorization.

61071102720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301338 (or 5301321 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

Adding to 61071102720 its reverse (2720117016), we get a palindrome (63791219736).

The spelling of 61071102720 in words is "sixty-one billion, seventy-one million, one hundred two thousand, seven hundred twenty".