78298390592 has 14 divisors (see below), whose sum is σ = 155373368958. Its totient is φ = 39149195264.

The previous prime is 78298390571. The next prime is 78298390649. The reversal of 78298390592 is 29509389287.

It can be written as a sum of positive squares in only one way, i.e., 40407432256 + 37890958336 = 201016^2 + 194656^2 .

It is a super-2 number, since 2×78298390592² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611706113 + ... + 611706240.

Almost surely, 2^78298390592 is an apocalyptic number.

It is an amenable number.

78298390592 is a deficient number, since it is larger than the sum of its proper divisors (77074978366).

78298390592 is a wasteful number, since it uses less digits than its factorization.

78298390592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223412365 (or 1223412355 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 62.

The spelling of 78298390592 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred ninety thousand, five hundred ninety-two".