987525445477 has 16 divisors (see below), whose sum is σ = 1015109148672. Its totient is φ = 960235294720.

The previous prime is 987525445471. The next prime is 987525445481. The reversal of 987525445477 is 774544525789.

It is a cyclic number.

It is not a de Polignac number, because 987525445477 - 2²⁷ = 987391227749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987525445471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4519527 + ... + 4732987.

It is an arithmetic number, because the mean of its divisors is an integer number (63444321792).

Almost surely, 2^987525445477 is an apocalyptic number.

It is an amenable number.

987525445477 is a deficient number, since it is larger than the sum of its proper divisors (27583703195).

987525445477 is a wasteful number, since it uses less digits than its factorization.

987525445477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214148.

The product of its digits is 395136000, while the sum is 67.

The spelling of 987525445477 in words is "nine hundred eighty-seven billion, five hundred twenty-five million, four hundred forty-five thousand, four hundred seventy-seven".