61478051369 has 8 divisors (see below), whose sum is σ = 70413043008. Its totient is φ = 52581162960.

The previous prime is 61478051339. The next prime is 61478051413. The reversal of 61478051369 is 96315087416.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61478051369 is a prime.

It is a super-2 number, since 2×61478051369² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61478051329) 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, 9522347 + ... + 9528800.

It is an arithmetic number, because the mean of its divisors is an integer number (8801630376).

Almost surely, 2^61478051369 is an apocalyptic number.

It is an amenable number.

61478051369 is a deficient number, since it is larger than the sum of its proper divisors (8934991639).

61478051369 is a wasteful number, since it uses less digits than its factorization.

61478051369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19051615.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 61478051369 in words is "sixty-one billion, four hundred seventy-eight million, fifty-one thousand, three hundred sixty-nine".