78277946533012 has 48 divisors (see below), whose sum is σ = 142714414205440. Its totient is φ = 37525833705600.

The previous prime is 78277946532977. The next prime is 78277946533051. The reversal of 78277946533012 is 21033564977287.

It is a super-2 number, since 2×78277946533012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167649103 + ... + 168115369.

It is a 1-persistent number, because it is pandigital, but 2⋅78277946533012 = 156555893066024 is not.

Almost surely, 2^{78277946533012} is an apocalyptic number.

It is an amenable number.

78277946533012 is a deficient number, since it is larger than the sum of its proper divisors (64436467672428).

78277946533012 is a wasteful number, since it uses less digits than its factorization.

78277946533012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478832 (or 478830 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 64.

The spelling of 78277946533012 in words is "seventy-eight trillion, two hundred seventy-seven billion, nine hundred forty-six million, five hundred thirty-three thousand, twelve".