61497228117 has 16 divisors (see below), whose sum is σ = 91348669440. Its totient is φ = 36539466432.

The previous prime is 61497227993. The next prime is 61497228137. The reversal of 61497228117 is 71182279416.

61497228117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61497228117 - 2⁷ = 61497227989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61497228137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27185973 + ... + 27188234.

It is an arithmetic number, because the mean of its divisors is an integer number (5709291840).

Almost surely, 2^61497228117 is an apocalyptic number.

It is an amenable number.

61497228117 is a deficient number, since it is larger than the sum of its proper divisors (29851441323).

61497228117 is a wasteful number, since it uses less digits than its factorization.

61497228117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54374252.

The product of its digits is 338688, while the sum is 48.

The spelling of 61497228117 in words is "sixty-one billion, four hundred ninety-seven million, two hundred twenty-eight thousand, one hundred seventeen".