87775630501 has 12 divisors (see below), whose sum is σ = 95195381220. Its totient is φ = 80897157120.

The previous prime is 87775630447. The next prime is 87775630507. The reversal of 87775630501 is 10503657778.

It can be written as a sum of positive squares in 6 ways, for example, as 23738797476 + 64036833025 = 154074^2 + 253055^2 .

It is not a de Polignac number, because 87775630501 - 2⁷ = 87775630373 is a prime.

It is a super-2 number, since 2×87775630501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87775630507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296806 + ... + 513463.

It is an arithmetic number, because the mean of its divisors is an integer number (7932948435).

Almost surely, 2^87775630501 is an apocalyptic number.

It is an amenable number.

87775630501 is a deficient number, since it is larger than the sum of its proper divisors (7419750719).

87775630501 is a wasteful number, since it uses less digits than its factorization.

87775630501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810936 (or 810923 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 87775630501 in words is "eighty-seven billion, seven hundred seventy-five million, six hundred thirty thousand, five hundred one".