61427523221415 has 48 divisors (see below), whose sum is σ = 118911551155488. Its totient is φ = 30241242193536.

The previous prime is 61427523221377. The next prime is 61427523221429. The reversal of 61427523221415 is 51412232572416.

61427523221415 is a `hidden beast` number, since 6 + 1 + 4 + 2 + 7 + 5 + 2 + 3 + 221 + 415 = 666.

It is not a de Polignac number, because 61427523221415 - 2¹³ = 61427523213223 is a prime.

It is a super-2 number, since 2×61427523221415² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1944508524 + ... + 1944540113.

It is an arithmetic number, because the mean of its divisors is an integer number (2477323982406).

Almost surely, 2^{61427523221415} is an apocalyptic number.

61427523221415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61427523221415 is a deficient number, since it is larger than the sum of its proper divisors (57484027934073).

61427523221415 is a wasteful number, since it uses less digits than its factorization.

61427523221415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889048670 (or 3889048658 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 61427523221415 in words is "sixty-one trillion, four hundred twenty-seven billion, five hundred twenty-three million, two hundred twenty-one thousand, four hundred fifteen".