61207688545 has 8 divisors (see below), whose sum is σ = 73450575360. Its totient is φ = 48965251440.

The previous prime is 61207688519. The next prime is 61207688569. The reversal of 61207688545 is 54588670216.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61207688545 - 2⁹ = 61207688033 is a prime.

It is a super-2 number, since 2×61207688545² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61207688492 and 61207688501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396210 + ... + 528580.

It is an arithmetic number, because the mean of its divisors is an integer number (9181321920).

Almost surely, 2^61207688545 is an apocalyptic number.

It is an amenable number.

61207688545 is a deficient number, since it is larger than the sum of its proper divisors (12242886815).

61207688545 is a wasteful number, since it uses less digits than its factorization.

61207688545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224855.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 61207688545 in words is "sixty-one billion, two hundred seven million, six hundred eighty-eight thousand, five hundred forty-five".