61153565250647 has 4 divisors (see below), whose sum is σ = 62645115622656. Its totient is φ = 59662014878640.

The previous prime is 61153565250563. The next prime is 61153565250689. The reversal of 61153565250647 is 74605256535116.

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 61153565250647 - 2¹⁴ = 61153565234263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61153565250592 and 61153565250601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61153565270647) 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, 745775185943 + ... + 745775186024.

It is an arithmetic number, because the mean of its divisors is an integer number (15661278905664).

Almost surely, 2^{61153565250647} is an apocalyptic number.

61153565250647 is a deficient number, since it is larger than the sum of its proper divisors (1491550372009).

61153565250647 is a wasteful number, since it uses less digits than its factorization.

61153565250647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491550372008.

The product of its (nonzero) digits is 22680000, while the sum is 56.

The spelling of 61153565250647 in words is "sixty-one trillion, one hundred fifty-three billion, five hundred sixty-five million, two hundred fifty thousand, six hundred forty-seven".