61919608351 has 16 divisors (see below), whose sum is σ = 67689381888. Its totient is φ = 56386915200.

The previous prime is 61919608343. The next prime is 61919608357. The reversal of 61919608351 is 15380691916.

It is a cyclic number.

It is not a de Polignac number, because 61919608351 - 2³ = 61919608343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61919608295 and 61919608304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61919608357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5196066 + ... + 5207968.

It is an arithmetic number, because the mean of its divisors is an integer number (4230586368).

Almost surely, 2^61919608351 is an apocalyptic number.

61919608351 is a deficient number, since it is larger than the sum of its proper divisors (5769773537).

61919608351 is a wasteful number, since it uses less digits than its factorization.

61919608351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21822.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 61919608351 in words is "sixty-one billion, nine hundred nineteen million, six hundred eight thousand, three hundred fifty-one".