61309072407 has 8 divisors (see below), whose sum is σ = 89176832640. Its totient is φ = 37157013560.

The previous prime is 61309072399. The next prime is 61309072441. The reversal of 61309072407 is 70427090316.

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 61309072407 - 2³ = 61309072399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61309072457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928925307 + ... + 928925372.

It is an arithmetic number, because the mean of its divisors is an integer number (11147104080).

Almost surely, 2^61309072407 is an apocalyptic number.

61309072407 is a deficient number, since it is larger than the sum of its proper divisors (27867760233).

61309072407 is a wasteful number, since it uses less digits than its factorization.

61309072407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857850693.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 61309072407 in words is "sixty-one billion, three hundred nine million, seventy-two thousand, four hundred seven".