78263525501 has 8 divisors (see below), whose sum is σ = 90013737600. Its totient is φ = 66655740528.

The previous prime is 78263525449. The next prime is 78263525531. The reversal of 78263525501 is 10552536287.

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

It is a cyclic number.

It is not a de Polignac number, because 78263525501 - 2⁶ = 78263525437 is a prime.

It is a super-2 number, since 2×78263525501² (a number of 23 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 (78263525531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35605601 + ... + 35607798.

It is an arithmetic number, because the mean of its divisors is an integer number (11251717200).

Almost surely, 2^78263525501 is an apocalyptic number.

It is an amenable number.

78263525501 is a deficient number, since it is larger than the sum of its proper divisors (11750212099).

78263525501 is a wasteful number, since it uses less digits than its factorization.

78263525501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71213563.

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 78263525501 in words is "seventy-eight billion, two hundred sixty-three million, five hundred twenty-five thousand, five hundred one".