61490409393 has 8 divisors (see below), whose sum is σ = 93699671488. Its totient is φ = 35137376784.

The previous prime is 61490409373. The next prime is 61490409397. The reversal of 61490409393 is 39390409416.

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

It is not a de Polignac number, because 61490409393 - 2⁶ = 61490409329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61490409397) 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 7 ways as a sum of consecutive naturals, for example, 1464057346 + ... + 1464057387.

It is an arithmetic number, because the mean of its divisors is an integer number (11712458936).

Almost surely, 2^61490409393 is an apocalyptic number.

It is an amenable number.

61490409393 is a deficient number, since it is larger than the sum of its proper divisors (32209262095).

61490409393 is a wasteful number, since it uses less digits than its factorization.

61490409393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928114743.

The product of its (nonzero) digits is 629856, while the sum is 48.

The spelling of 61490409393 in words is "sixty-one billion, four hundred ninety million, four hundred nine thousand, three hundred ninety-three".