61122783399 has 8 divisors (see below), whose sum is σ = 86290988400. Its totient is φ = 38351550336.

The previous prime is 61122783389. The next prime is 61122783409. The reversal of 61122783399 is 99338722116.

It is an interprime number because it is at equal distance from previous prime (61122783389) and next prime (61122783409).

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

It is not a de Polignac number, because 61122783399 - 2¹² = 61122779303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 1198485949 = 61122783399 / (6 + 1 + 1 + 2 + 2 + 7 + 8 + 3 + 3 + 9 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61122783349) 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, 599242924 + ... + 599243025.

It is an arithmetic number, because the mean of its divisors is an integer number (10786373550).

Almost surely, 2^61122783399 is an apocalyptic number.

61122783399 is a deficient number, since it is larger than the sum of its proper divisors (25168205001).

61122783399 is a wasteful number, since it uses less digits than its factorization.

61122783399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198485969.

The product of its digits is 979776, while the sum is 51.

The spelling of 61122783399 in words is "sixty-one billion, one hundred twenty-two million, seven hundred eighty-three thousand, three hundred ninety-nine".