61982077774 has 8 divisors (see below), whose sum is σ = 93318742440. Its totient is φ = 30875830296.

The previous prime is 61982077747. The next prime is 61982077793. The reversal of 61982077774 is 47777028916.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57603624 + ... + 57604699.

It is an arithmetic number, because the mean of its divisors is an integer number (11664842805).

Almost surely, 2^61982077774 is an apocalyptic number.

61982077774 is a deficient number, since it is larger than the sum of its proper divisors (31336664666).

61982077774 is a wasteful number, since it uses less digits than its factorization.

61982077774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115208594.

The product of its (nonzero) digits is 8297856, while the sum is 58.

The spelling of 61982077774 in words is "sixty-one billion, nine hundred eighty-two million, seventy-seven thousand, seven hundred seventy-four".