78525042501477 has 32 divisors (see below), whose sum is σ = 123641590294656. Its totient is φ = 43702476595200.

The previous prime is 78525042501473. The next prime is 78525042501523. The reversal of 78525042501477 is 77410524052587.

It is not a de Polignac number, because 78525042501477 - 2² = 78525042501473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78525042501473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474119424 + ... + 474285017.

It is an arithmetic number, because the mean of its divisors is an integer number (3863799696708).

Almost surely, 2^{78525042501477} is an apocalyptic number.

It is an amenable number.

78525042501477 is a deficient number, since it is larger than the sum of its proper divisors (45116547793179).

78525042501477 is a wasteful number, since it uses less digits than its factorization.

78525042501477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948404661.

The product of its (nonzero) digits is 21952000, while the sum is 57.

The spelling of 78525042501477 in words is "seventy-eight trillion, five hundred twenty-five billion, forty-two million, five hundred one thousand, four hundred seventy-seven".