61790672247 has 8 divisors (see below), whose sum is σ = 84397015920. Its totient is φ = 40189055040.

The previous prime is 61790672239. The next prime is 61790672261. The reversal of 61790672247 is 74227609716.

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

It is not a de Polignac number, because 61790672247 - 2³ = 61790672239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61790672247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61790672267) 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, 251181472 + ... + 251181717.

It is an arithmetic number, because the mean of its divisors is an integer number (10549626990).

Almost surely, 2^61790672247 is an apocalyptic number.

61790672247 is a deficient number, since it is larger than the sum of its proper divisors (22606343673).

61790672247 is a wasteful number, since it uses less digits than its factorization.

61790672247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502363233.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 61790672247 in words is "sixty-one billion, seven hundred ninety million, six hundred seventy-two thousand, two hundred forty-seven".