61507201335659 has 4 divisors (see below), whose sum is σ = 61507469499240. Its totient is φ = 61506933172080.

The previous prime is 61507201335647. The next prime is 61507201335677. The reversal of 61507201335659 is 95653310270516.

It is a happy number.

61507201335659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-61507201335659 is a prime.

It is a super-2 number, since 2×61507201335659² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61507201335659.

It is not an unprimeable number, because it can be changed into a prime (61507201335959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133737449 + ... + 134196570.

It is an arithmetic number, because the mean of its divisors is an integer number (15376867374810).

Almost surely, 2^{61507201335659} is an apocalyptic number.

61507201335659 is a deficient number, since it is larger than the sum of its proper divisors (268163581).

61507201335659 is a wasteful number, since it uses less digits than its factorization.

61507201335659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268163580.

The product of its (nonzero) digits is 5103000, while the sum is 53.

The spelling of 61507201335659 in words is "sixty-one trillion, five hundred seven billion, two hundred one million, three hundred thirty-five thousand, six hundred fifty-nine".