61527273405 has 128 divisors (see below), whose sum is σ = 112867098624. Its totient is φ = 28404172800.

The previous prime is 61527273373. The next prime is 61527273413. The reversal of 61527273405 is 50437272516.

It is not a de Polignac number, because 61527273405 - 2⁵ = 61527273373 is a prime.

It is a Smith number, since the sum of its digits (42) 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 an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 40397974 + ... + 40399496.

It is an arithmetic number, because the mean of its divisors is an integer number (881774208).

Almost surely, 2^61527273405 is an apocalyptic number.

61527273405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61527273405 is a deficient number, since it is larger than the sum of its proper divisors (51339825219).

61527273405 is a wasteful number, since it uses less digits than its factorization.

61527273405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779.

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 61527273405 in words is "sixty-one billion, five hundred twenty-seven million, two hundred seventy-three thousand, four hundred five".