61457445054561 has 8 divisors (see below), whose sum is σ = 82301090903680. Its totient is φ = 40792714620912.

The previous prime is 61457445054547. The next prime is 61457445054613. The reversal of 61457445054561 is 16545054475416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61457445054561 - 2¹⁴ = 61457445038177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61457445054961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44728853065 + ... + 44728854438.

It is an arithmetic number, because the mean of its divisors is an integer number (10287636362960).

Almost surely, 2^{61457445054561} is an apocalyptic number.

It is an amenable number.

61457445054561 is a deficient number, since it is larger than the sum of its proper divisors (20843645849119).

61457445054561 is a wasteful number, since it uses less digits than its factorization.

61457445054561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89457707735.

The product of its (nonzero) digits is 40320000, while the sum is 57.

The spelling of 61457445054561 in words is "sixty-one trillion, four hundred fifty-seven billion, four hundred forty-five million, fifty-four thousand, five hundred sixty-one".