61951983053 has 16 divisors (see below), whose sum is σ = 67211232000. Its totient is φ = 56915514432.

The previous prime is 61951982921. The next prime is 61951983089. The reversal of 61951983053 is 35038915916.

It is a cyclic number.

It is not a de Polignac number, because 61951983053 - 2⁸ = 61951982797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61951982992 and 61951983010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61951983853) 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, 220898 + ... + 415571.

It is an arithmetic number, because the mean of its divisors is an integer number (4200702000).

Almost surely, 2^61951983053 is an apocalyptic number.

It is an amenable number.

61951983053 is a deficient number, since it is larger than the sum of its proper divisors (5259248947).

61951983053 is a wasteful number, since it uses less digits than its factorization.

61951983053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636644.

The product of its (nonzero) digits is 874800, while the sum is 50.

The spelling of 61951983053 in words is "sixty-one billion, nine hundred fifty-one million, nine hundred eighty-three thousand, fifty-three".