61450727845 has 32 divisors (see below), whose sum is σ = 80421973632. Its totient is φ = 44803299072.

The previous prime is 61450727831. The next prime is 61450727887. The reversal of 61450727845 is 54872705416.

It is not a de Polignac number, because 61450727845 - 2¹⁵ = 61450695077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11936562 + ... + 11941708.

It is an arithmetic number, because the mean of its divisors is an integer number (2513186676).

Almost surely, 2^61450727845 is an apocalyptic number.

61450727845 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61450727845 is a deficient number, since it is larger than the sum of its proper divisors (18971245787).

61450727845 is a wasteful number, since it uses less digits than its factorization.

61450727845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7461.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 61450727845 in words is "sixty-one billion, four hundred fifty million, seven hundred twenty-seven thousand, eight hundred forty-five".