61954855355 has 16 divisors (see below), whose sum is σ = 75990687840. Its totient is φ = 48473288448.

The previous prime is 61954855279. The next prime is 61954855357. The reversal of 61954855355 is 55355845916.

It is a cyclic number.

It is not a de Polignac number, because 61954855355 - 2⁸ = 61954855099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61954855355.

It is not an unprimeable number, because it can be changed into a prime (61954855357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290525 + ... + 456414.

It is an arithmetic number, because the mean of its divisors is an integer number (4749417990).

Almost surely, 2^61954855355 is an apocalyptic number.

61954855355 is a deficient number, since it is larger than the sum of its proper divisors (14035832485).

61954855355 is a wasteful number, since it uses less digits than its factorization.

61954855355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747310.

The product of its digits is 16200000, while the sum is 56.

The spelling of 61954855355 in words is "sixty-one billion, nine hundred fifty-four million, eight hundred fifty-five thousand, three hundred fifty-five".