78253676141 has 4 divisors (see below), whose sum is σ = 78254303232. Its totient is φ = 78253049052.

The previous prime is 78253676107. The next prime is 78253676147. The reversal of 78253676141 is 14167635287.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 78253676141 - 2⁶ = 78253676077 is a prime.

It is a super-2 number, since 2×78253676141² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78253676141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78253676147) 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, 55661 + ... + 399506.

It is an arithmetic number, because the mean of its divisors is an integer number (19563575808).

Almost surely, 2^78253676141 is an apocalyptic number.

It is an amenable number.

78253676141 is a deficient number, since it is larger than the sum of its proper divisors (627091).

78253676141 is a wasteful number, since it uses less digits than its factorization.

78253676141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627090.

The product of its digits is 1693440, while the sum is 50.

The spelling of 78253676141 in words is "seventy-eight billion, two hundred fifty-three million, six hundred seventy-six thousand, one hundred forty-one".