61351178455 has 16 divisors (see below), whose sum is σ = 85323815424. Its totient is φ = 41476851360.

The previous prime is 61351178453. The next prime is 61351178459. The reversal of 61351178455 is 55487115316.

It is not a de Polignac number, because 61351178455 - 2¹ = 61351178453 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 (61351178453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12341817 + ... + 12346786.

It is an arithmetic number, because the mean of its divisors is an integer number (5332738464).

Almost surely, 2^61351178455 is an apocalyptic number.

61351178455 is a deficient number, since it is larger than the sum of its proper divisors (23972636969).

61351178455 is a wasteful number, since it uses less digits than its factorization.

61351178455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24688686.

The product of its digits is 504000, while the sum is 46.

The spelling of 61351178455 in words is "sixty-one billion, three hundred fifty-one million, one hundred seventy-eight thousand, four hundred fifty-five".