61613602654 has 4 divisors (see below), whose sum is σ = 92420403984. Its totient is φ = 30806801326.

The previous prime is 61613602607. The next prime is 61613602657. The reversal of 61613602654 is 45620631616.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61613602657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15403400662 + ... + 15403400665.

It is an arithmetic number, because the mean of its divisors is an integer number (23105100996).

Almost surely, 2^61613602654 is an apocalyptic number.

61613602654 is a deficient number, since it is larger than the sum of its proper divisors (30806801330).

61613602654 is a wasteful number, since it uses less digits than its factorization.

61613602654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30806801329.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 61613602654 in words is "sixty-one billion, six hundred thirteen million, six hundred two thousand, six hundred fifty-four".