61380100919 has 8 divisors (see below), whose sum is σ = 61457710608. Its totient is φ = 61302530560.

The previous prime is 61380100879. The next prime is 61380100931. The reversal of 61380100919 is 91900108316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61380100919 - 2¹⁶ = 61380035383 is a prime.

It is a super-2 number, since 2×61380100919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61380100219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4180439 + ... + 4195095.

It is an arithmetic number, because the mean of its divisors is an integer number (7682213826).

Almost surely, 2^61380100919 is an apocalyptic number.

61380100919 is a deficient number, since it is larger than the sum of its proper divisors (77609689).

61380100919 is a wasteful number, since it uses less digits than its factorization.

61380100919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19665.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 61380100919 in words is "sixty-one billion, three hundred eighty million, one hundred thousand, nine hundred nineteen".