87987492901 has 32 divisors (see below), whose sum is σ = 117429580800. Its totient is φ = 63852209280.

The previous prime is 87987492889. The next prime is 87987492911. The reversal of 87987492901 is 10929478978.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87987492901 - 2¹³ = 87987484709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87987492911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 423360 + ... + 595993.

It is an arithmetic number, because the mean of its divisors is an integer number (3669674400).

Almost surely, 2^87987492901 is an apocalyptic number.

It is an amenable number.

87987492901 is a deficient number, since it is larger than the sum of its proper divisors (29442087899).

87987492901 is a wasteful number, since it uses less digits than its factorization.

87987492901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019449.

The product of its (nonzero) digits is 18289152, while the sum is 64.

The spelling of 87987492901 in words is "eighty-seven billion, nine hundred eighty-seven million, four hundred ninety-two thousand, nine hundred one".