87161990401 has 8 divisors (see below), whose sum is σ = 91856290400. Its totient is φ = 82478373120.

The previous prime is 87161990359. The next prime is 87161990449. The reversal of 87161990401 is 10409916178.

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 87161990401 - 2¹³ = 87161982209 is a prime.

It is a super-2 number, since 2×87161990401² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87161990471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2653920 + ... + 2686561.

It is an arithmetic number, because the mean of its divisors is an integer number (11482036300).

Almost surely, 2^87161990401 is an apocalyptic number.

It is an amenable number.

87161990401 is a deficient number, since it is larger than the sum of its proper divisors (4694299999).

87161990401 is a wasteful number, since it uses less digits than its factorization.

87161990401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341359.

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 87161990401 in words is "eighty-seven billion, one hundred sixty-one million, nine hundred ninety thousand, four hundred one".