78215736075753 has 4 divisors (see below), whose sum is σ = 104287648101008. Its totient is φ = 52143824050500.

The previous prime is 78215736075751. The next prime is 78215736075787. The reversal of 78215736075753 is 35757063751287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 78215736075753 - 2¹ = 78215736075751 is a prime.

It is a super-2 number, since 2×78215736075753² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78215736075751) 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, 13035956012623 + ... + 13035956012628.

It is an arithmetic number, because the mean of its divisors is an integer number (26071912025252).

Almost surely, 2^{78215736075753} is an apocalyptic number.

It is an amenable number.

78215736075753 is a deficient number, since it is larger than the sum of its proper divisors (26071912025255).

78215736075753 is a wasteful number, since it uses less digits than its factorization.

78215736075753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26071912025254.

The product of its (nonzero) digits is 259308000, while the sum is 66.

The spelling of 78215736075753 in words is "seventy-eight trillion, two hundred fifteen billion, seven hundred thirty-six million, seventy-five thousand, seven hundred fifty-three".