77019490712 has 16 divisors (see below), whose sum is σ = 144430808400. Its totient is φ = 38504608480.

The previous prime is 77019490711. The next prime is 77019490727. The reversal of 77019490712 is 21709491077.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77019490711) 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, 578012 + ... + 698667.

It is an arithmetic number, because the mean of its divisors is an integer number (9026925525).

Almost surely, 2^77019490712 is an apocalyptic number.

It is an amenable number.

77019490712 is a deficient number, since it is larger than the sum of its proper divisors (67411317688).

77019490712 is a wasteful number, since it uses less digits than its factorization.

77019490712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284226 (or 1284222 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 47.

The spelling of 77019490712 in words is "seventy-seven billion, nineteen million, four hundred ninety thousand, seven hundred twelve".