61646745163054 has 4 divisors (see below), whose sum is σ = 92470117744584. Its totient is φ = 30823372581526.

The previous prime is 61646745163037. The next prime is 61646745163067. The reversal of 61646745163054 is 45036154764616.

It is a happy number.

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

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 61646745163054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15411686290762 + ... + 15411686290765.

It is an arithmetic number, because the mean of its divisors is an integer number (23117529436146).

Almost surely, 2^{61646745163054} is an apocalyptic number.

61646745163054 is a deficient number, since it is larger than the sum of its proper divisors (30823372581530).

61646745163054 is a wasteful number, since it uses less digits than its factorization.

61646745163054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30823372581529.

The product of its (nonzero) digits is 43545600, while the sum is 58.

The spelling of 61646745163054 in words is "sixty-one trillion, six hundred forty-six billion, seven hundred forty-five million, one hundred sixty-three thousand, fifty-four".