61657651206701 has 4 divisors (see below), whose sum is σ = 67262892225504. Its totient is φ = 56052410187900.

The previous prime is 61657651206673. The next prime is 61657651206761. The reversal of 61657651206701 is 10760215675616.

61657651206701 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61657651206701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61657651206761) 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, 2802620509385 + ... + 2802620509406.

It is an arithmetic number, because the mean of its divisors is an integer number (16815723056376).

Almost surely, 2^{61657651206701} is an apocalyptic number.

It is an amenable number.

61657651206701 is a deficient number, since it is larger than the sum of its proper divisors (5605241018803).

61657651206701 is a wasteful number, since it uses less digits than its factorization.

61657651206701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605241018802.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 61657651206701 in words is "sixty-one trillion, six hundred fifty-seven billion, six hundred fifty-one million, two hundred six thousand, seven hundred one".