78663353053071 has 8 divisors (see below), whose sum is σ = 108267840761344. Its totient is φ = 50750550356760.

The previous prime is 78663353052961. The next prime is 78663353053081. The reversal of 78663353053071 is 17035035336687.

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

It is not a de Polignac number, because 78663353053071 - 2⁴² = 74265306541967 is a prime.

It is a super-2 number, since 2×78663353053071² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78663353053081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422921252881 + ... + 422921253066.

It is an arithmetic number, because the mean of its divisors is an integer number (13533480095168).

Almost surely, 2^{78663353053071} is an apocalyptic number.

78663353053071 is a deficient number, since it is larger than the sum of its proper divisors (29604487708273).

78663353053071 is a wasteful number, since it uses less digits than its factorization.

78663353053071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845842505981.

The product of its (nonzero) digits is 28576800, while the sum is 57.

The spelling of 78663353053071 in words is "seventy-eight trillion, six hundred sixty-three billion, three hundred fifty-three million, fifty-three thousand, seventy-one".