87261562753 has 4 divisors (see below), whose sum is σ = 87889343920. Its totient is φ = 86633781588.

The previous prime is 87261562691. The next prime is 87261562757. The reversal of 87261562753 is 35726516278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87261562753 is a prime.

It is a super-2 number, since 2×87261562753² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87261562753.

It is not an unprimeable number, because it can be changed into a prime (87261562757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313890375 + ... + 313890652.

It is an arithmetic number, because the mean of its divisors is an integer number (21972335980).

Almost surely, 2^87261562753 is an apocalyptic number.

It is an amenable number.

87261562753 is a deficient number, since it is larger than the sum of its proper divisors (627781167).

87261562753 is a wasteful number, since it uses less digits than its factorization.

87261562753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627781166.

The product of its digits is 4233600, while the sum is 52.

The spelling of 87261562753 in words is "eighty-seven billion, two hundred sixty-one million, five hundred sixty-two thousand, seven hundred fifty-three".