87263744413 has 4 divisors (see below), whose sum is σ = 87720622848. Its totient is φ = 86806865980.

The previous prime is 87263744371. The next prime is 87263744419. The reversal of 87263744413 is 31444736278.

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-87263744413 is a prime.

It is a super-2 number, since 2×87263744413² (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 (87263744419) 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, 228438931 + ... + 228439312.

It is an arithmetic number, because the mean of its divisors is an integer number (21930155712).

Almost surely, 2^87263744413 is an apocalyptic number.

It is an amenable number.

87263744413 is a deficient number, since it is larger than the sum of its proper divisors (456878435).

87263744413 is a wasteful number, since it uses less digits than its factorization.

87263744413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456878434.

The product of its digits is 2709504, while the sum is 49.

The spelling of 87263744413 in words is "eighty-seven billion, two hundred sixty-three million, seven hundred forty-four thousand, four hundred thirteen".