61667283478 has 8 divisors (see below), whose sum is σ = 93035613168. Its totient is φ = 30655412424.

The previous prime is 61667283473. The next prime is 61667283499. The reversal of 61667283478 is 87438276616.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61667283473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89114226 + ... + 89114917.

It is an arithmetic number, because the mean of its divisors is an integer number (11629451646).

Almost surely, 2^61667283478 is an apocalyptic number.

61667283478 is a deficient number, since it is larger than the sum of its proper divisors (31368329690).

61667283478 is a wasteful number, since it uses less digits than its factorization.

61667283478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178229318.

The product of its digits is 16257024, while the sum is 58.

The spelling of 61667283478 in words is "sixty-one billion, six hundred sixty-seven million, two hundred eighty-three thousand, four hundred seventy-eight".