87293714381 has 2 divisors, whose sum is σ = 87293714382. Its totient is φ = 87293714380.

The previous prime is 87293714369. The next prime is 87293714429. The reversal of 87293714381 is 18341739278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69006561481 + 18287152900 = 262691^2 + 135230^2 .

It is a cyclic number.

It is not a de Polignac number, because 87293714381 - 2²⁶ = 87226605517 is a prime.

It is a super-2 number, since 2×87293714381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87293710381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43646857190 + 43646857191.

It is an arithmetic number, because the mean of its divisors is an integer number (43646857191).

Almost surely, 2^87293714381 is an apocalyptic number.

It is an amenable number.

87293714381 is a deficient number, since it is larger than the sum of its proper divisors (1).

87293714381 is an equidigital number, since it uses as much as digits as its factorization.

87293714381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The spelling of 87293714381 in words is "eighty-seven billion, two hundred ninety-three million, seven hundred fourteen thousand, three hundred eighty-one".