61206265199 has 4 divisors (see below), whose sum is σ = 61219131120. Its totient is φ = 61193399280.

The previous prime is 61206265187. The next prime is 61206265207. The reversal of 61206265199 is 99156260216.

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

It is a cyclic number.

It is not a de Polignac number, because 61206265199 - 2³² = 56911297903 is a prime.

It is a super-2 number, since 2×61206265199² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61206265699) 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, 6425822 + ... + 6435339.

It is an arithmetic number, because the mean of its divisors is an integer number (15304782780).

Almost surely, 2^61206265199 is an apocalyptic number.

61206265199 is a deficient number, since it is larger than the sum of its proper divisors (12865921).

61206265199 is a wasteful number, since it uses less digits than its factorization.

61206265199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12865920.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 61206265199 in words is "sixty-one billion, two hundred six million, two hundred sixty-five thousand, one hundred ninety-nine".