87031811617754 has 4 divisors (see below), whose sum is σ = 130547717426634. Its totient is φ = 43515905808876.

The previous prime is 87031811617703. The next prime is 87031811617783. The reversal of 87031811617754 is 45771611813078.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 83800787392729 + 3231024225025 = 9154277^2 + 1797505^2 .

It is a super-3 number, since 3×87031811617754³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87031811617693 and 87031811617702.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21757952904437 + ... + 21757952904440.

Almost surely, 2^{87031811617754} is an apocalyptic number.

87031811617754 is a deficient number, since it is larger than the sum of its proper divisors (43515905808880).

87031811617754 is a wasteful number, since it uses less digits than its factorization.

87031811617754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43515905808879.

The product of its (nonzero) digits is 7902720, while the sum is 59.

The spelling of 87031811617754 in words is "eighty-seven trillion, thirty-one billion, eight hundred eleven million, six hundred seventeen thousand, seven hundred fifty-four".