61107101651 has 4 divisors (see below), whose sum is σ = 61423718952. Its totient is φ = 60790484352.

The previous prime is 61107101639. The next prime is 61107101683. The reversal of 61107101651 is 15610170116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61107101651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61107101611) 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, 158308361 + ... + 158308746.

It is an arithmetic number, because the mean of its divisors is an integer number (15355929738).

Almost surely, 2^61107101651 is an apocalyptic number.

61107101651 is a deficient number, since it is larger than the sum of its proper divisors (316617301).

61107101651 is a wasteful number, since it uses less digits than its factorization.

61107101651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316617300.

The product of its (nonzero) digits is 1260, while the sum is 29.

Adding to 61107101651 its reverse (15610170116), we get a palindrome (76717271767).

The spelling of 61107101651 in words is "sixty-one billion, one hundred seven million, one hundred one thousand, six hundred fifty-one".