61072774478 has 8 divisors (see below), whose sum is σ = 92083821168. Its totient is φ = 30378167424.

The previous prime is 61072774463. The next prime is 61072774481. The reversal of 61072774478 is 87447727016.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 79109426 + ... + 79110197.

It is an arithmetic number, because the mean of its divisors is an integer number (11510477646).

Almost surely, 2^61072774478 is an apocalyptic number.

61072774478 is a deficient number, since it is larger than the sum of its proper divisors (31011046690).

61072774478 is a wasteful number, since it uses less digits than its factorization.

61072774478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158219818.

The product of its (nonzero) digits is 3687936, while the sum is 53.

The spelling of 61072774478 in words is "sixty-one billion, seventy-two million, seven hundred seventy-four thousand, four hundred seventy-eight".